Precalculus Examples

$\frac{4 x - 88}{{(x - 4)}^{2} (x^{2} + 2)}$

Step 1

Decompose the fraction and multiply through by the common denominator.

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Step 1.1

Factor $4$ out of $4 x - 88$ .

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Step 1.1.1

Factor $4$ out of $4 x$ .

$\frac{4 (x) - 88}{{(x - 4)}^{2} (x^{2} + 2)}$

Step 1.1.2

Factor $4$ out of $- 88$ .

$\frac{4 x + 4 \cdot - 22}{{(x - 4)}^{2} (x^{2} + 2)}$

Step 1.1.3

Factor $4$ out of $4 x + 4 \cdot - 22$ .

$\frac{4 (x - 22)}{{(x - 4)}^{2} (x^{2} + 2)}$

Step 1.2

For each factor in the denominator, create a new fraction using the factor as the denominator, and an unknown value as the numerator. Since the factor in the denominator is linear, put a single variable in its place $A$ .

$\frac{A}{{(x - 4)}^{2}}$

Step 1.3

$\frac{A}{{(x - 4)}^{2}} + \frac{B}{x - 4}$

Step 1.4

For each factor in the denominator, create a new fraction using the factor as the denominator, and an unknown value as the numerator. Since the factor is 2nd order, $2$ terms are required in the numerator. The number of terms required in the numerator is always equal to the order of the factor in the denominator.

$\frac{A}{{(x - 4)}^{2}} + \frac{B}{x - 4} + \frac{C x + D}{x^{2} + 2}$

Step 1.5

Multiply each fraction in the equation by the denominator of the original expression. In this case, the denominator is ${(x - 4)}^{2} (x^{2} + 2)$ .

$\frac{4 (x - 22) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2} (x^{2} + 2)} = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.6

Cancel the common factor of ${(x - 4)}^{2}$ .

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Step 1.6.1

Cancel the common factor.

Step 1.6.2

Rewrite the expression.

$\frac{4 (x - 22) (x^{2} + 2)}{x^{2} + 2} = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.7

Cancel the common factor of $x^{2} + 2$ .

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Step 1.7.1

Cancel the common factor.

$\frac{4 (x - 22) (x^{2} + 2)}{x^{2} + 2} = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.7.2

Divide $4 (x - 22)$ by $1$ .

$4 (x - 22) = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.8

Apply the distributive property.

$4 x + 4 \cdot - 22 = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.9

Multiply $4$ by $- 22$ .

$4 x - 88 = \frac{(A) {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10

Simplify each term.

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Step 1.10.1

Cancel the common factor of ${(x - 4)}^{2}$ .

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Step 1.10.1.1

Cancel the common factor.

$4 x - 88 = \frac{A {(x - 4)}^{2} (x^{2} + 2)}{{(x - 4)}^{2}} + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.1.2

Divide $(A) (x^{2} + 2)$ by $1$ .

$4 x - 88 = (A) (x^{2} + 2) + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.2

Apply the distributive property.

$4 x - 88 = A x^{2} + A \cdot 2 + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.3

Move $2$ to the left of $A$ .

$4 x - 88 = A x^{2} + 2 \cdot A + \frac{(B) {(x - 4)}^{2} (x^{2} + 2)}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.4

Cancel the common factor of ${(x - 4)}^{2}$ and $x - 4$ .

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Step 1.10.4.1

Factor $x - 4$ out of $(B) {(x - 4)}^{2} (x^{2} + 2)$ .

$4 x - 88 = A x^{2} + 2 A + \frac{(x - 4) (B (x - 4) (x^{2} + 2))}{x - 4} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.4.2

Cancel the common factors.

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Step 1.10.4.2.1

Multiply by $1$ .

$4 x - 88 = A x^{2} + 2 A + \frac{(x - 4) (B (x - 4) (x^{2} + 2))}{(x - 4) \cdot 1} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.4.2.2

Cancel the common factor.

$4 x - 88 = A x^{2} + 2 A + \frac{(x - 4) (B (x - 4) (x^{2} + 2))}{(x - 4) \cdot 1} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.4.2.3

Rewrite the expression.

$4 x - 88 = A x^{2} + 2 A + \frac{B (x - 4) (x^{2} + 2)}{1} + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.4.2.4

Divide $B (x - 4) (x^{2} + 2)$ by $1$ .

$4 x - 88 = A x^{2} + 2 A + B (x - 4) (x^{2} + 2) + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.5

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + (B x + B \cdot - 4) (x^{2} + 2) + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.6

Move $- 4$ to the left of $B$ .

$4 x - 88 = A x^{2} + 2 A + (B x - 4 \cdot B) (x^{2} + 2) + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.7

Expand $(B x - 4 B) (x^{2} + 2)$ using the FOIL Method.

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Step 1.10.7.1

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x (x^{2} + 2) - 4 B (x^{2} + 2) + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.7.2

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x \cdot x^{2} + B x \cdot 2 - 4 B (x^{2} + 2) + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.7.3

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x \cdot x^{2} + B x \cdot 2 - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8

Simplify each term.

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Step 1.10.8.1

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 1.10.8.1.1

Move $x^{2}$ .

$4 x - 88 = A x^{2} + 2 A + B (x^{2} x) + B x \cdot 2 - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8.1.2

Multiply $x^{2}$ by $x$ .

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Step 1.10.8.1.2.1

Raise $x$ to the power of $1$ .

$4 x - 88 = A x^{2} + 2 A + B (x^{2} x) + B x \cdot 2 - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 x - 88 = A x^{2} + 2 A + B x^{2 + 1} + B x \cdot 2 - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8.1.3

Add $2$ and $1$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + B x \cdot 2 - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8.2

Move $2$ to the left of $B x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 \cdot (B x) - 4 B x^{2} - 4 B \cdot 2 + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.8.3

Multiply $2$ by $- 4$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.9

Cancel the common factor of $x^{2} + 2$ .

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Step 1.10.9.1

Cancel the common factor.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + \frac{(C x + D) {(x - 4)}^{2} (x^{2} + 2)}{x^{2} + 2}$

Step 1.10.9.2

Divide $(C x + D) {(x - 4)}^{2}$ by $1$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) {(x - 4)}^{2}$

Step 1.10.10

Rewrite ${(x - 4)}^{2}$ as $(x - 4) (x - 4)$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) ((x - 4) (x - 4))$

Step 1.10.11

Expand $(x - 4) (x - 4)$ using the FOIL Method.

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Step 1.10.11.1

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x (x - 4) - 4 (x - 4))$

Step 1.10.11.2

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x \cdot x + x \cdot - 4 - 4 (x - 4))$

Step 1.10.11.3

Apply the distributive property.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x \cdot x + x \cdot - 4 - 4 x - 4 \cdot - 4)$

Step 1.10.12

Simplify and combine like terms.

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Step 1.10.12.1

Simplify each term.

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Step 1.10.12.1.1

Multiply $x$ by $x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x^{2} + x \cdot - 4 - 4 x - 4 \cdot - 4)$

Step 1.10.12.1.2

Move $- 4$ to the left of $x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x^{2} - 4 \cdot x - 4 x - 4 \cdot - 4)$

Step 1.10.12.1.3

Multiply $- 4$ by $- 4$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x^{2} - 4 x - 4 x + 16)$

Step 1.10.12.2

Subtract $4 x$ from $- 4 x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + (C x + D) (x^{2} - 8 x + 16)$

Step 1.10.13

Expand $(C x + D) (x^{2} - 8 x + 16)$ by multiplying each term in the first expression by each term in the second expression.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x \cdot x^{2} + C x (- 8 x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14

Simplify each term.

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Step 1.10.14.1

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 1.10.14.1.1

Move $x^{2}$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C (x^{2} x) + C x (- 8 x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.1.2

Multiply $x^{2}$ by $x$ .

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Step 1.10.14.1.2.1

Raise $x$ to the power of $1$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C (x^{2} x) + C x (- 8 x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{2 + 1} + C x (- 8 x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.1.3

Add $2$ and $1$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} + C x (- 8 x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.2

Rewrite using the commutative property of multiplication.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C x \cdot x + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.3

Multiply $x$ by $x$ by adding the exponents.

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Step 1.10.14.3.1

Move $x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C (x \cdot x) + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.3.2

Multiply $x$ by $x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C x^{2} + C x \cdot 16 + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.4

Move $16$ to the left of $C x$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C x^{2} + 16 \cdot (C x) + D x^{2} + D (- 8 x) + D \cdot 16$

Step 1.10.14.5

Rewrite using the commutative property of multiplication.

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x + D \cdot 16$

Step 1.10.14.6

Move $16$ to the left of $D$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 B x - 4 B x^{2} - 8 B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x + 16 D$

Step 1.11

Simplify the expression.

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Step 1.11.1

Move $B$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 x B - 4 B x^{2} - 8 B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x + 16 D$

Step 1.11.2

Move $B$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 x B - 4 x^{2} B - 8 B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x + 16 D$

Step 1.11.3

Move $- 8 B$ .

$4 x - 88 = A x^{2} + 2 A + B x^{3} + 2 x B - 4 x^{2} B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x - 8 B + 16 D$

Step 1.11.4

Move $2 A$ .

$4 x - 88 = A x^{2} + B x^{3} + 2 x B - 4 x^{2} B + C x^{3} - 8 C x^{2} + 16 C x + D x^{2} - 8 D x + 2 A - 8 B + 16 D$

Step 1.11.5

Move $16 C x$ .

$4 x - 88 = A x^{2} + B x^{3} + 2 x B - 4 x^{2} B + C x^{3} - 8 C x^{2} + D x^{2} + 16 C x - 8 D x + 2 A - 8 B + 16 D$

Step 1.11.6

Move $2 x B$ .

$4 x - 88 = A x^{2} + B x^{3} - 4 x^{2} B + C x^{3} - 8 C x^{2} + D x^{2} + 2 x B + 16 C x - 8 D x + 2 A - 8 B + 16 D$

Step 1.11.7

Move $- 4 x^{2} B$ .

$4 x - 88 = A x^{2} + B x^{3} + C x^{3} - 4 x^{2} B - 8 C x^{2} + D x^{2} + 2 x B + 16 C x - 8 D x + 2 A - 8 B + 16 D$

Step 1.11.8

Move $A x^{2}$ .

$4 x - 88 = B x^{3} + C x^{3} + A x^{2} - 4 x^{2} B - 8 C x^{2} + D x^{2} + 2 x B + 16 C x - 8 D x + 2 A - 8 B + 16 D$

Step 2

Create equations for the partial fraction variables and use them to set up a system of equations.

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Step 2.1

Create an equation for the partial fraction variables by equating the coefficients of $x^{3}$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$0 = B + C$

Step 2.2

Create an equation for the partial fraction variables by equating the coefficients of $x^{2}$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$0 = A - 4 B - 8 C + D$

Step 2.3

Create an equation for the partial fraction variables by equating the coefficients of $x$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$4 = 2 B + 16 C - 8 D$

Step 2.4

Create an equation for the partial fraction variables by equating the coefficients of the terms not containing $x$ . For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$- 88 = 2 A - 8 B + 16 D$

Step 2.5

Set up the system of equations to find the coefficients of the partial fractions.

$0 = B + C$

$0 = A - 4 B - 8 C + D$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

$0 = B + C$

$0 = A - 4 B - 8 C + D$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3

Solve the system of equations.

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Step 3.1

Solve for $B$ in $0 = B + C$ .

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Step 3.1.1

Rewrite the equation as $B + C = 0$ .

$B + C = 0$

$0 = A - 4 B - 8 C + D$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3.1.2

Subtract $C$ from both sides of the equation.

$B = - C$

$0 = A - 4 B - 8 C + D$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

$B = - C$

$0 = A - 4 B - 8 C + D$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2

Replace all occurrences of $B$ with $- C$ in each equation.

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Step 3.2.1

Replace all occurrences of $B$ in $0 = A - 4 B - 8 C + D$ with $- C$ .

$0 = A - 4 (- C) - 8 C + D$

$B = - C$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.2

Simplify the right side.

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Step 3.2.2.1

Simplify $A - 4 (- C) - 8 C + D$ .

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Step 3.2.2.1.1

Multiply $- 1$ by $- 4$ .

$0 = A + 4 C - 8 C + D$

$B = - C$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.2.1.2

Subtract $8 C$ from $4 C$ .

$0 = A - 4 C + D$

$B = - C$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

$0 = A - 4 C + D$

$B = - C$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

$0 = A - 4 C + D$

$B = - C$

$4 = 2 B + 16 C - 8 D$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.3

Replace all occurrences of $B$ in $4 = 2 B + 16 C - 8 D$ with $- C$ .

$4 = 2 (- C) + 16 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.4

Simplify the right side.

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Step 3.2.4.1

Simplify $2 (- C) + 16 C - 8 D$ .

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Step 3.2.4.1.1

Multiply $- 1$ by $2$ .

$4 = - 2 C + 16 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.4.1.2

Add $- 2 C$ and $16 C$ .

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A - 8 B + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A - 8 B + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A - 8 B + 16 D$

Step 3.2.5

Replace all occurrences of $B$ in $- 88 = 2 A - 8 B + 16 D$ with $- C$ .

$- 88 = 2 A - 8 (- C) + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

Step 3.2.6

Simplify the right side.

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Step 3.2.6.1

Multiply $- 1$ by $- 8$ .

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$0 = A - 4 C + D$

$B = - C$

Step 3.3

Solve for $A$ in $0 = A - 4 C + D$ .

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Step 3.3.1

Rewrite the equation as $A - 4 C + D = 0$ .

$A - 4 C + D = 0$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.3.2

Move all terms not containing $A$ to the right side of the equation.

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Step 3.3.2.1

Add $4 C$ to both sides of the equation.

$A + D = 4 C$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.3.2.2

Subtract $D$ from both sides of the equation.

$A = 4 C - D$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$B = - C$

$A = 4 C - D$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$B = - C$

$A = 4 C - D$

$- 88 = 2 A + 8 C + 16 D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4

Replace all occurrences of $A$ with $4 C - D$ in each equation.

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Step 3.4.1

Replace all occurrences of $A$ in $- 88 = 2 A + 8 C + 16 D$ with $4 C - D$ .

$- 88 = 2 (4 C - D) + 8 C + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4.2

Simplify the right side.

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Step 3.4.2.1

Simplify $2 (4 C - D) + 8 C + 16 D$ .

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Step 3.4.2.1.1

Simplify each term.

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Step 3.4.2.1.1.1

Apply the distributive property.

$- 88 = 2 (4 C) + 2 (- D) + 8 C + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4.2.1.1.2

Multiply $4$ by $2$ .

$- 88 = 8 C + 2 (- D) + 8 C + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4.2.1.1.3

Multiply $- 1$ by $2$ .

$- 88 = 8 C - 2 D + 8 C + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$- 88 = 8 C - 2 D + 8 C + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4.2.1.2

Simplify by adding terms.

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Step 3.4.2.1.2.1

Add $8 C$ and $8 C$ .

$- 88 = 16 C - 2 D + 16 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.4.2.1.2.2

Add $- 2 D$ and $16 D$ .

$- 88 = 16 C + 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$- 88 = 16 C + 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$- 88 = 16 C + 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$- 88 = 16 C + 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$- 88 = 16 C + 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5

Solve for $C$ in $- 88 = 16 C + 14 D$ .

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Step 3.5.1

Rewrite the equation as $16 C + 14 D = - 88$ .

$16 C + 14 D = - 88$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.2

Subtract $14 D$ from both sides of the equation.

$16 C = - 88 - 14 D$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3

Divide each term in $16 C = - 88 - 14 D$ by $16$ and simplify.

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Step 3.5.3.1

Divide each term in $16 C = - 88 - 14 D$ by $16$ .

$\frac{16 C}{16} = \frac{- 88}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.2

Simplify the left side.

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Step 3.5.3.2.1

Cancel the common factor of $16$ .

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Step 3.5.3.2.1.1

Cancel the common factor.

$\frac{16 C}{16} = \frac{- 88}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.2.1.2

Divide $C$ by $1$ .

$C = \frac{- 88}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = \frac{- 88}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = \frac{- 88}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3

Simplify the right side.

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Step 3.5.3.3.1

Simplify each term.

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Step 3.5.3.3.1.1

Cancel the common factor of $- 88$ and $16$ .

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Step 3.5.3.3.1.1.1

Factor $8$ out of $- 88$ .

$C = \frac{8 (- 11)}{16} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.1.2

Cancel the common factors.

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Step 3.5.3.3.1.1.2.1

Factor $8$ out of $16$ .

$C = \frac{8 \cdot - 11}{8 \cdot 2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.1.2.2

Cancel the common factor.

$C = \frac{8 \cdot - 11}{8 \cdot 2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.1.2.3

Rewrite the expression.

$C = \frac{- 11}{2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = \frac{- 11}{2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = \frac{- 11}{2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.2

Move the negative in front of the fraction.

$C = - \frac{11}{2} + \frac{- 14 D}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.3

Cancel the common factor of $- 14$ and $16$ .

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Step 3.5.3.3.1.3.1

Factor $2$ out of $- 14 D$ .

$C = - \frac{11}{2} + \frac{2 (- 7 D)}{16}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.3.2

Cancel the common factors.

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Step 3.5.3.3.1.3.2.1

Factor $2$ out of $16$ .

$C = - \frac{11}{2} + \frac{2 (- 7 D)}{2 (8)}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.3.2.2

Cancel the common factor.

$C = - \frac{11}{2} + \frac{2 (- 7 D)}{2 \cdot 8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.3.2.3

Rewrite the expression.

$C = - \frac{11}{2} + \frac{- 7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} + \frac{- 7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} + \frac{- 7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.5.3.3.1.4

Move the negative in front of the fraction.

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = 4 C - D$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6

Replace all occurrences of $C$ with $- \frac{11}{2} - \frac{7 D}{8}$ in each equation.

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Step 3.6.1

Replace all occurrences of $C$ in $A = 4 C - D$ with $- \frac{11}{2} - \frac{7 D}{8}$ .

$A = 4 (- \frac{11}{2} - \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2

Simplify the right side.

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Step 3.6.2.1

Simplify $4 (- \frac{11}{2} - \frac{7 D}{8}) - D$ .

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Step 3.6.2.1.1

Simplify each term.

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Step 3.6.2.1.1.1

Apply the distributive property.

$A = 4 (- \frac{11}{2}) + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.2

Cancel the common factor of $2$ .

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Step 3.6.2.1.1.2.1

Move the leading negative in $- \frac{11}{2}$ into the numerator.

$A = 4 (\frac{- 11}{2}) + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.2.2

Factor $2$ out of $4$ .

$A = 2 (2) (\frac{- 11}{2}) + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.2.3

Cancel the common factor.

$A = 2 \cdot (2 (\frac{- 11}{2})) + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.2.4

Rewrite the expression.

$A = 2 \cdot - 11 + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = 2 \cdot - 11 + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.3

Multiply $2$ by $- 11$ .

$A = - 22 + 4 (- \frac{7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.4

Cancel the common factor of $4$ .

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Step 3.6.2.1.1.4.1

Move the leading negative in $- \frac{7 D}{8}$ into the numerator.

$A = - 22 + 4 (\frac{- 7 D}{8}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.4.2

Factor $4$ out of $8$ .

$A = - 22 + 4 (\frac{- 7 D}{4 (2)}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.4.3

Cancel the common factor.

$A = - 22 + 4 (\frac{- 7 D}{4 \cdot 2}) - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.4.4

Rewrite the expression.

$A = - 22 + \frac{- 7 D}{2} - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 + \frac{- 7 D}{2} - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.1.5

Move the negative in front of the fraction.

$A = - 22 - \frac{7 D}{2} - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 - \frac{7 D}{2} - D$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.2

To write $- D$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$A = - 22 - \frac{7 D}{2} - D \cdot \frac{2}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.3

Simplify terms.

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Step 3.6.2.1.3.1

Combine $- D$ and $\frac{2}{2}$ .

$A = - 22 - \frac{7 D}{2} + \frac{- D \cdot 2}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.3.2

Combine the numerators over the common denominator.

$A = - 22 + \frac{- 7 D - D \cdot 2}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 + \frac{- 7 D - D \cdot 2}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4

Simplify each term.

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Step 3.6.2.1.4.1

Simplify the numerator.

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Step 3.6.2.1.4.1.1

Factor $D$ out of $- 7 D - D \cdot 2$ .

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Step 3.6.2.1.4.1.1.1

Factor $D$ out of $- 7 D$ .

$A = - 22 + \frac{D \cdot - 7 - D \cdot 2}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.1.1.2

Factor $D$ out of $- D \cdot 2$ .

$A = - 22 + \frac{D \cdot - 7 + D (- 1 \cdot 2)}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.1.1.3

Factor $D$ out of $D \cdot - 7 + D (- 1 \cdot 2)$ .

$A = - 22 + \frac{D (- 7 - 1 \cdot 2)}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 + \frac{D (- 7 - 1 \cdot 2)}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.1.2

Multiply $- 1$ by $2$ .

$A = - 22 + \frac{D (- 7 - 2)}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.1.3

Subtract $2$ from $- 7$ .

$A = - 22 + \frac{D \cdot - 9}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 + \frac{D \cdot - 9}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.2

Move $- 9$ to the left of $D$ .

$A = - 22 + \frac{- 9 \cdot D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.2.1.4.3

Move the negative in front of the fraction.

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$4 = 14 C - 8 D$

$B = - C$

Step 3.6.3

Replace all occurrences of $C$ in $4 = 14 C - 8 D$ with $- \frac{11}{2} - \frac{7 D}{8}$ .

$4 = 14 (- \frac{11}{2} - \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4

Simplify the right side.

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Step 3.6.4.1

Simplify $14 (- \frac{11}{2} - \frac{7 D}{8}) - 8 D$ .

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Step 3.6.4.1.1

Simplify each term.

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Step 3.6.4.1.1.1

Apply the distributive property.

$4 = 14 (- \frac{11}{2}) + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.2

Cancel the common factor of $2$ .

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Step 3.6.4.1.1.2.1

Move the leading negative in $- \frac{11}{2}$ into the numerator.

$4 = 14 (\frac{- 11}{2}) + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.2.2

Factor $2$ out of $14$ .

$4 = 2 (7) (\frac{- 11}{2}) + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.2.3

Cancel the common factor.

$4 = 2 \cdot (7 (\frac{- 11}{2})) + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.2.4

Rewrite the expression.

$4 = 7 \cdot - 11 + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = 7 \cdot - 11 + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.3

Multiply $7$ by $- 11$ .

$4 = - 77 + 14 (- \frac{7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.4

Cancel the common factor of $2$ .

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Step 3.6.4.1.1.4.1

Move the leading negative in $- \frac{7 D}{8}$ into the numerator.

$4 = - 77 + 14 (\frac{- 7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.4.2

Factor $2$ out of $14$ .

$4 = - 77 + 2 (7) (\frac{- 7 D}{8}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.4.3

Factor $2$ out of $8$ .

$4 = - 77 + 2 \cdot (7 (\frac{- 7 D}{2 \cdot 4})) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.4.4

Cancel the common factor.

$4 = - 77 + 2 \cdot (7 (\frac{- 7 D}{2 \cdot 4})) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.4.5

Rewrite the expression.

$4 = - 77 + 7 (\frac{- 7 D}{4}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 + 7 (\frac{- 7 D}{4}) - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.5

Combine $7$ and $\frac{- 7 D}{4}$ .

$4 = - 77 + \frac{7 (- 7 D)}{4} - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.6

Multiply $- 7$ by $7$ .

$4 = - 77 + \frac{- 49 D}{4} - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.1.7

Move the negative in front of the fraction.

$4 = - 77 - \frac{49 D}{4} - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 - \frac{49 D}{4} - 8 D$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.2

To write $- 8 D$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$4 = - 77 - \frac{49 D}{4} - 8 D \cdot \frac{4}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.3

Simplify terms.

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Step 3.6.4.1.3.1

Combine $- 8 D$ and $\frac{4}{4}$ .

$4 = - 77 - \frac{49 D}{4} + \frac{- 8 D \cdot 4}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.3.2

Combine the numerators over the common denominator.

$4 = - 77 + \frac{- 49 D - 8 D \cdot 4}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 + \frac{- 49 D - 8 D \cdot 4}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4

Simplify each term.

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Step 3.6.4.1.4.1

Simplify the numerator.

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Step 3.6.4.1.4.1.1

Factor $D$ out of $- 49 D - 8 D \cdot 4$ .

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Step 3.6.4.1.4.1.1.1

Factor $D$ out of $- 49 D$ .

$4 = - 77 + \frac{D \cdot - 49 - 8 D \cdot 4}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.1.1.2

Factor $D$ out of $- 8 D \cdot 4$ .

$4 = - 77 + \frac{D \cdot - 49 + D (- 8 \cdot 4)}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.1.1.3

Factor $D$ out of $D \cdot - 49 + D (- 8 \cdot 4)$ .

$4 = - 77 + \frac{D (- 49 - 8 \cdot 4)}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 + \frac{D (- 49 - 8 \cdot 4)}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.1.2

Multiply $- 8$ by $4$ .

$4 = - 77 + \frac{D (- 49 - 32)}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.1.3

Subtract $32$ from $- 49$ .

$4 = - 77 + \frac{D \cdot - 81}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 + \frac{D \cdot - 81}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.2

Move $- 81$ to the left of $D$ .

$4 = - 77 + \frac{- 81 \cdot D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.4.1.4.3

Move the negative in front of the fraction.

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = - C$

Step 3.6.5

Replace all occurrences of $C$ in $B = - C$ with $- \frac{11}{2} - \frac{7 D}{8}$ .

$B = - (- \frac{11}{2} - \frac{7 D}{8})$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.6.6

Simplify the right side.

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Step 3.6.6.1

Simplify $- (- \frac{11}{2} - \frac{7 D}{8})$ .

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Step 3.6.6.1.1

Apply the distributive property.

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.6.6.1.2

Multiply $- - \frac{11}{2}$ .

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Step 3.6.6.1.2.1

Multiply $- 1$ by $- 1$ .

$B = 1 (\frac{11}{2}) + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.6.6.1.2.2

Multiply $\frac{11}{2}$ by $1$ .

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.6.6.1.3

Multiply $- - \frac{7 D}{8}$ .

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Step 3.6.6.1.3.1

Multiply $- 1$ by $- 1$ .

$B = \frac{11}{2} + 1 (\frac{7 D}{8})$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.6.6.1.3.2

Multiply $\frac{7 D}{8}$ by $1$ .

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{7 D}{8}$

$4 = - 77 - \frac{81 D}{4}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7

Solve for $D$ in $4 = - 77 - \frac{81 D}{4}$ .

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Step 3.7.1

Rewrite the equation as $- 77 - \frac{81 D}{4} = 4$ .

$- 77 - \frac{81 D}{4} = 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.2

Move all terms not containing $D$ to the right side of the equation.

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Step 3.7.2.1

Add $77$ to both sides of the equation.

$- \frac{81 D}{4} = 4 + 77$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.2.2

Add $4$ and $77$ .

$- \frac{81 D}{4} = 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$- \frac{81 D}{4} = 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.3

Multiply both sides of the equation by $- \frac{4}{81}$ .

$- \frac{4}{81} \cdot (- \frac{81 D}{4}) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4

Simplify both sides of the equation.

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Step 3.7.4.1

Simplify the left side.

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Step 3.7.4.1.1

Simplify $- \frac{4}{81} (- \frac{81 D}{4})$ .

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Step 3.7.4.1.1.1

Cancel the common factor of $4$ .

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Step 3.7.4.1.1.1.1

Move the leading negative in $- \frac{4}{81}$ into the numerator.

$\frac{- 4}{81} \cdot (- \frac{81 D}{4}) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.1.2

Move the leading negative in $- \frac{81 D}{4}$ into the numerator.

$\frac{- 4}{81} \cdot \frac{- 81 D}{4} = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.1.3

Factor $4$ out of $- 4$ .

$\frac{4 (- 1)}{81} \cdot \frac{- 81 D}{4} = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.1.4

Cancel the common factor.

$\frac{4 \cdot - 1}{81} \cdot \frac{- 81 D}{4} = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.1.5

Rewrite the expression.

$\frac{- 1}{81} \cdot (- 81 D) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$\frac{- 1}{81} \cdot (- 81 D) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.2

Cancel the common factor of $81$ .

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Step 3.7.4.1.1.2.1

Factor $81$ out of $- 81 D$ .

$\frac{- 1}{81} \cdot (81 (- D)) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.2.2

Cancel the common factor.

$\frac{- 1}{81} \cdot (81 (- D)) = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.2.3

Rewrite the expression.

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.3

Multiply.

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Step 3.7.4.1.1.3.1

Multiply $- 1$ by $- 1$ .

$1 D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.1.1.3.2

Multiply $D$ by $1$ .

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - \frac{4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.2

Simplify the right side.

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Step 3.7.4.2.1

Cancel the common factor of $81$ .

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Step 3.7.4.2.1.1

Move the leading negative in $- \frac{4}{81}$ into the numerator.

$D = \frac{- 4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.2.1.2

Cancel the common factor.

$D = \frac{- 4}{81} \cdot 81$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.7.4.2.1.3

Rewrite the expression.

$D = - 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$D = - 4$

$B = \frac{11}{2} + \frac{7 D}{8}$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8

Replace all occurrences of $D$ with $- 4$ in each equation.

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Step 3.8.1

Replace all occurrences of $D$ in $B = \frac{11}{2} + \frac{7 D}{8}$ with $- 4$ .

$B = \frac{11}{2} + \frac{7 (- 4)}{8}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2

Simplify the right side.

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Step 3.8.2.1

Simplify $\frac{11}{2} + \frac{7 (- 4)}{8}$ .

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Step 3.8.2.1.1

Multiply $7$ by $- 4$ .

$B = \frac{11}{2} + \frac{- 28}{8}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.2

Simplify each term.

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Step 3.8.2.1.2.1

Cancel the common factor of $- 28$ and $8$ .

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Step 3.8.2.1.2.1.1

Factor $4$ out of $- 28$ .

$B = \frac{11}{2} + \frac{4 (- 7)}{8}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.2.1.2

Cancel the common factors.

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Step 3.8.2.1.2.1.2.1

Factor $4$ out of $8$ .

$B = \frac{11}{2} + \frac{4 \cdot - 7}{4 \cdot 2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.2.1.2.2

Cancel the common factor.

$B = \frac{11}{2} + \frac{4 \cdot - 7}{4 \cdot 2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.2.1.2.3

Rewrite the expression.

$B = \frac{11}{2} + \frac{- 7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{- 7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} + \frac{- 7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.2.2

Move the negative in front of the fraction.

$B = \frac{11}{2} - \frac{7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = \frac{11}{2} - \frac{7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.3

Combine fractions.

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Step 3.8.2.1.3.1

Combine the numerators over the common denominator.

$B = \frac{11 - 7}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.3.2

Simplify the expression.

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Step 3.8.2.1.3.2.1

Subtract $7$ from $11$ .

$B = \frac{4}{2}$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.2.1.3.2.2

Divide $4$ by $2$ .

$B = 2$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = 2$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = 2$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = 2$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$B = 2$

$D = - 4$

$A = - 22 - \frac{9 D}{2}$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.3

Replace all occurrences of $D$ in $A = - 22 - \frac{9 D}{2}$ with $- 4$ .

$A = - 22 - \frac{9 (- 4)}{2}$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4

Simplify the right side.

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Step 3.8.4.1

Simplify $- 22 - \frac{9 (- 4)}{2}$ .

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Step 3.8.4.1.1

Simplify each term.

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Step 3.8.4.1.1.1

Cancel the common factor of $- 4$ and $2$ .

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Step 3.8.4.1.1.1.1

Factor $2$ out of $9 (- 4)$ .

$A = - 22 - \frac{2 (9 \cdot (- 2))}{2}$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.1.2

Cancel the common factors.

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Step 3.8.4.1.1.1.2.1

Factor $2$ out of $2$ .

$A = - 22 - \frac{2 (9 \cdot (- 2))}{2 (1)}$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.1.2.2

Cancel the common factor.

$A = - 22 - \frac{2 (9 \cdot (- 2))}{2 \cdot 1}$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.1.2.3

Rewrite the expression.

$A = - 22 - \frac{9 \cdot (- 2)}{1}$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.1.2.4

Divide $9 \cdot (- 2)$ by $1$ .

$A = - 22 - (9 \cdot (- 2))$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 22 - (9 \cdot (- 2))$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 22 - (9 \cdot (- 2))$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.2

Multiply $- (9 \cdot (- 2))$ .

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Step 3.8.4.1.1.2.1

Multiply $9$ by $- 2$ .

$A = - 22 + 18$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.1.2.2

Multiply $- 1$ by $- 18$ .

$A = - 22 + 18$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 22 + 18$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 22 + 18$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.4.1.2

Add $- 22$ and $18$ .

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 D}{8}$

Step 3.8.5

Replace all occurrences of $D$ in $C = - \frac{11}{2} - \frac{7 D}{8}$ with $- 4$ .

$C = - \frac{11}{2} - \frac{7 (- 4)}{8}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6

Simplify the right side.

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Step 3.8.6.1

Simplify $- \frac{11}{2} - \frac{7 (- 4)}{8}$ .

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Step 3.8.6.1.1

Simplify each term.

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Step 3.8.6.1.1.1

Cancel the common factor of $- 4$ and $8$ .

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Step 3.8.6.1.1.1.1

Factor $4$ out of $7 (- 4)$ .

$C = - \frac{11}{2} - \frac{4 (7 \cdot (- 1))}{8}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.1.2

Cancel the common factors.

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Step 3.8.6.1.1.1.2.1

Factor $4$ out of $8$ .

$C = - \frac{11}{2} - \frac{4 (7 \cdot (- 1))}{4 (2)}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.1.2.2

Cancel the common factor.

$C = - \frac{11}{2} - \frac{4 (7 \cdot (- 1))}{4 \cdot 2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.1.2.3

Rewrite the expression.

$C = - \frac{11}{2} - \frac{7 \cdot (- 1)}{2}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 \cdot (- 1)}{2}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} - \frac{7 \cdot (- 1)}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.2

Multiply $7$ by $- 1$ .

$C = - \frac{11}{2} - \frac{- 7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.3

Move the negative in front of the fraction.

$C = - \frac{11}{2} + \frac{7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.4

Multiply $- - \frac{7}{2}$ .

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Step 3.8.6.1.1.4.1

Multiply $- 1$ by $- 1$ .

$C = - \frac{11}{2} + 1 (\frac{7}{2})$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.1.4.2

Multiply $\frac{7}{2}$ by $1$ .

$C = - \frac{11}{2} + \frac{7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} + \frac{7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

$C = - \frac{11}{2} + \frac{7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.2

Combine fractions.

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Step 3.8.6.1.2.1

Combine the numerators over the common denominator.

$C = \frac{- 11 + 7}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.2.2

Simplify the expression.

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Step 3.8.6.1.2.2.1

Add $- 11$ and $7$ .

$C = \frac{- 4}{2}$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.8.6.1.2.2.2

Divide $- 4$ by $2$ .

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

$C = - 2$

$A = - 4$

$B = 2$

$D = - 4$

Step 3.9

List all of the solutions.

$C = - 2, A = - 4, B = 2, D = - 4$

Step 4

Replace each of the partial fraction coefficients in $\frac{A}{{(x - 4)}^{2}} + \frac{B}{x - 4} + \frac{C x + D}{x^{2} + 2}$ with the values found for $A$ , $B$ , $C$ , and $D$ .

$\frac{- 4}{{(x - 4)}^{2}} + \frac{2}{x - 4} + \frac{- 2 x - 4}{x^{2} + 2}$

Step 5

Simplify.

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Step 5.1

Remove parentheses.

$\frac{- 4}{{(x - 4)}^{2}} + \frac{2}{x - 4} + \frac{(- 2) \cdot x - 4}{x^{2} + 2}$

Step 5.2

Multiply $- 2$ by $x$ .

$\frac{- 4}{{(x - 4)}^{2}} + \frac{2}{x - 4} + \frac{- 2 x - 4}{x^{2} + 2}$