Basic Math Examples

$\frac{\frac{a}{4 b} - \frac{1}{3}}{\frac{7}{4 a} - \frac{3}{\frac{3}{a}}}$

Step 1

Multiply the numerator and denominator of the fraction by $12 b a \frac{3}{a}$ .

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Step 1.1

Multiply $\frac{\frac{a}{4 b} - \frac{1}{3}}{\frac{7}{4 a} - \frac{3}{\frac{3}{a}}}$ by $\frac{12 b a \frac{3}{a}}{12 b a \frac{3}{a}}$ .

$\frac{12 b a \frac{3}{a}}{12 b a \frac{3}{a}} \cdot \frac{\frac{a}{4 b} - \frac{1}{3}}{\frac{7}{4 a} - \frac{3}{\frac{3}{a}}}$

Step 1.2

Combine.

$\frac{12 b a \frac{3}{a} (\frac{a}{4 b} - \frac{1}{3})}{12 b a \frac{3}{a} (\frac{7}{4 a} - \frac{3}{\frac{3}{a}})}$

Step 2

Apply the distributive property.

$\frac{12 b a \frac{3}{a} \frac{a}{4 b} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3

Simplify by cancelling.

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Step 3.1

Cancel the common factor of $4 b$ .

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Step 3.1.1

Factor $4 b$ out of $12 b a \frac{3}{a}$ .

$\frac{4 b (3 a \frac{3}{a}) \frac{a}{4 b} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.1.2

Cancel the common factor.

$\frac{4 b (3 a \frac{3}{a}) \frac{a}{4 b} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.1.3

Rewrite the expression.

$\frac{3 a \frac{3}{a} a + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.2

Combine $3$ and $\frac{3}{a}$ .

$\frac{a \frac{3 \cdot 3}{a} a + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.3

Multiply $3$ by $3$ .

$\frac{a \frac{9}{a} a + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.4

Combine $a$ and $\frac{9}{a}$ .

$\frac{\frac{a \cdot 9}{a} a + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.5

Combine $\frac{a \cdot 9}{a}$ and $a$ .

$\frac{\frac{a \cdot 9 a}{a} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.6

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

$\frac{\frac{9 (a^{1} a)}{a} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.7

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

$\frac{\frac{9 (a^{1} a^{1})}{a} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.8

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

$\frac{\frac{9 a^{1 + 1}}{a} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.9

Add $1$ and $1$ .

$\frac{\frac{9 a^{2}}{a} + 12 b a \frac{3}{a} (- \frac{1}{3})}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.10

Cancel the common factor of $3$ .

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Step 3.10.1

Move the leading negative in $- \frac{1}{3}$ into the numerator.

$\frac{\frac{9 a^{2}}{a} + 12 b a \frac{3}{a} \frac{- 1}{3}}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.10.2

Factor $3$ out of $12 b a \frac{3}{a}$ .

$\frac{\frac{9 a^{2}}{a} + 3 (4 b a \frac{3}{a}) \frac{- 1}{3}}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.10.3

Cancel the common factor.

$\frac{\frac{9 a^{2}}{a} + 3 (4 b a \frac{3}{a}) \frac{- 1}{3}}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.10.4

Rewrite the expression.

$\frac{\frac{9 a^{2}}{a} + 4 b a \frac{3}{a} \cdot - 1}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.11

Combine $4$ and $\frac{3}{a}$ .

$\frac{\frac{9 a^{2}}{a} + b a \frac{4 \cdot 3}{a} \cdot - 1}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.12

Multiply $4$ by $3$ .

$\frac{\frac{9 a^{2}}{a} + b a \frac{12}{a} \cdot - 1}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.13

Combine $b$ and $\frac{12}{a}$ .

$\frac{\frac{9 a^{2}}{a} + a \frac{b \cdot 12}{a} \cdot - 1}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.14

Combine $a$ and $\frac{b \cdot 12}{a}$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot 12)}{a} \cdot - 1}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.15

Combine $\frac{a (b \cdot 12)}{a}$ and $- 1$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot 12) \cdot - 1}{a}}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.16

Multiply $- 1$ by $12$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{12 b a \frac{3}{a} \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.17

Cancel the common factor of $4 a$ .

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Step 3.17.1

Factor $4 a$ out of $12 b a \frac{3}{a}$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{4 a (3 b \frac{3}{a}) \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.17.2

Cancel the common factor.

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{4 a (3 b \frac{3}{a}) \frac{7}{4 a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.17.3

Rewrite the expression.

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{3 b \frac{3}{a} \cdot 7 + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.18

Combine $3$ and $\frac{3}{a}$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{b \frac{3 \cdot 3}{a} \cdot 7 + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.19

Multiply $3$ by $3$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{b \frac{9}{a} \cdot 7 + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.20

Combine $b$ and $\frac{9}{a}$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 9}{a} \cdot 7 + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.21

Combine $\frac{b \cdot 9}{a}$ and $7$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 9 \cdot 7}{a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.22

Multiply $7$ by $9$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} + 12 b a \frac{3}{a} (- \frac{3}{\frac{3}{a}})}$

Step 3.23

Cancel the common factor of $\frac{3}{a}$ .

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Step 3.23.1

Move the leading negative in $- \frac{3}{\frac{3}{a}}$ into the numerator.

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} + 12 b a \frac{3}{a} \frac{- 3}{\frac{3}{a}}}$

Step 3.23.2

Factor $\frac{3}{a}$ out of $12 b a \frac{3}{a}$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} + \frac{3}{a} (12 b a) \frac{- 3}{\frac{3}{a}}}$

Step 3.23.3

Cancel the common factor.

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} + \frac{3}{a} (12 b a) \frac{- 3}{\frac{3}{a}}}$

Step 3.23.4

Rewrite the expression.

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} + 12 b a \cdot - 3}$

Step 3.24

Multiply $- 3$ by $12$ .

$\frac{\frac{9 a^{2}}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4

Reduce the expression by cancelling the common factors.

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Step 4.1

Cancel the common factor of $a^{2}$ and $a$ .

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Step 4.1.1

Factor $a$ out of $9 a^{2}$ .

$\frac{\frac{a (9 a)}{a} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.1.2

Cancel the common factors.

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Step 4.1.2.1

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

$\frac{\frac{a (9 a)}{a^{1}} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.1.2.2

Factor $a$ out of $a^{1}$ .

$\frac{\frac{a (9 a)}{a \cdot 1} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.1.2.3

Cancel the common factor.

$\frac{\frac{a (9 a)}{a \cdot 1} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.1.2.4

Rewrite the expression.

$\frac{\frac{9 a}{1} + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.1.2.5

Divide $9 a$ by $1$ .

$\frac{9 a + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.2

Cancel the common factor of $a$ .

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Step 4.2.1

Cancel the common factor.

$\frac{9 a + \frac{a (b \cdot - 12)}{a}}{\frac{b \cdot 63}{a} - 36 b a}$

Step 4.2.2

Divide $b \cdot - 12$ by $1$ .

$\frac{9 a + b \cdot - 12}{\frac{b \cdot 63}{a} - 36 b a}$

Step 5

Multiply the numerator and denominator of the fraction by $a$ .

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Step 5.1

Multiply $\frac{9 a + b \cdot - 12}{\frac{b \cdot 63}{a} - 36 b a}$ by $\frac{a}{a}$ .

$\frac{a}{a} \cdot \frac{9 a + b \cdot - 12}{\frac{b \cdot 63}{a} - 36 b a}$

Step 5.2

Combine.

$\frac{a (9 a + b \cdot - 12)}{a (\frac{b \cdot 63}{a} - 36 b a)}$

Step 6

Apply the distributive property.

$\frac{a (9 a) + a (b \cdot - 12)}{a \frac{b \cdot 63}{a} + a (- 36 b a)}$

Step 7

Cancel the common factor of $a$ .

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Step 7.1

Cancel the common factor.

$\frac{a (9 a) + a (b \cdot - 12)}{a \frac{b \cdot 63}{a} + a (- 36 b a)}$

Step 7.2

Rewrite the expression.

$\frac{a (9 a) + a (b \cdot - 12)}{b \cdot 63 + a (- 36 b a)}$

Step 8

Simplify the numerator.

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Step 8.1

Rewrite using the commutative property of multiplication.

$\frac{9 a \cdot a + a b \cdot - 12}{b \cdot 63 + a (- 36 b a)}$

Step 8.2

Multiply $a$ by $a$ by adding the exponents.

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Step 8.2.1

Move $a$ .

$\frac{9 (a \cdot a) + a b \cdot - 12}{b \cdot 63 + a (- 36 b a)}$

Step 8.2.2

Multiply $a$ by $a$ .

$\frac{9 a^{2} + a b \cdot - 12}{b \cdot 63 + a (- 36 b a)}$

Step 8.3

Move $- 12$ to the left of $a b$ .

$\frac{9 a^{2} - 12 \cdot (a b)}{b \cdot 63 + a (- 36 b a)}$

Step 8.4

Factor $3 a$ out of $9 a^{2} - 12 a b$ .

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Step 8.4.1

Factor $3 a$ out of $9 a^{2}$ .

$\frac{3 a (3 a) - 12 a b}{b \cdot 63 + a (- 36 b a)}$

Step 8.4.2

Factor $3 a$ out of $- 12 a b$ .

$\frac{3 a (3 a) + 3 a (- 4 b)}{b \cdot 63 + a (- 36 b a)}$

Step 8.4.3

Factor $3 a$ out of $3 a (3 a) + 3 a (- 4 b)$ .

$\frac{3 a (3 a - 4 b)}{b \cdot 63 + a (- 36 b a)}$

Step 9

Simplify the denominator.

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Step 9.1

Factor $b \cdot 9$ out of $b \cdot 63 + a (- 36 b a)$ .

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Step 9.1.1

Factor $b \cdot 9$ out of $b \cdot 63$ .

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7) + a (- 36 b a)}$

Step 9.1.2

Factor $b \cdot 9$ out of $a (- 36 b a)$ .

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7) + b \cdot 9 (a (- 4 a))}$

Step 9.1.3

Factor $b \cdot 9$ out of $b \cdot 9 (7) + b \cdot 9 (a (- 4 a))$ .

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7 + a (- 4 a))}$

Step 9.2

Combine exponents.

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Step 9.2.1

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

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7 - 4 (a^{1} a))}$

Step 9.2.2

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

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7 - 4 (a^{1} a^{1}))}$

Step 9.2.3

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

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7 - 4 a^{1 + 1})}$

Step 9.2.4

Add $1$ and $1$ .

$\frac{3 a (3 a - 4 b)}{b \cdot 9 (7 - 4 a^{2})}$

Step 10

Reduce the expression by cancelling the common factors.

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Step 10.1

Cancel the common factor of $3$ and $9$ .

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Step 10.1.1

Factor $3$ out of $3 a (3 a - 4 b)$ .

$\frac{3 (a (3 a - 4 b))}{b \cdot 9 (7 - 4 a^{2})}$

Step 10.1.2

Cancel the common factors.

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Step 10.1.2.1

Factor $3$ out of $b \cdot 9 (7 - 4 a^{2})$ .

$\frac{3 (a (3 a - 4 b))}{3 (b \cdot 3 (7 - 4 a^{2}))}$

Step 10.1.2.2

Cancel the common factor.

$\frac{3 (a (3 a - 4 b))}{3 (b \cdot 3 (7 - 4 a^{2}))}$

Step 10.1.2.3

Rewrite the expression.

$\frac{a (3 a - 4 b)}{b \cdot 3 (7 - 4 a^{2})}$

Step 10.2

Move $3$ to the left of $b$ .

$\frac{a (3 a - 4 b)}{3 b (7 - 4 a^{2})}$