Basic Math Examples

$\frac{\frac{18}{h - 9} + \frac{h}{h - 5}}{\frac{4}{h - 10} - \frac{3}{h - 9}}$

Step 1

Multiply the numerator and denominator of the fraction by $(h - 9) (h - 5) (h - 10)$ .

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Step 1.1

Multiply $\frac{\frac{18}{h - 9} + \frac{h}{h - 5}}{\frac{4}{h - 10} - \frac{3}{h - 9}}$ by $\frac{(h - 9) (h - 5) (h - 10)}{(h - 9) (h - 5) (h - 10)}$ .

$\frac{(h - 9) (h - 5) (h - 10)}{(h - 9) (h - 5) (h - 10)} \cdot \frac{\frac{18}{h - 9} + \frac{h}{h - 5}}{\frac{4}{h - 10} - \frac{3}{h - 9}}$

Step 1.2

Combine.

$\frac{(h - 9) (h - 5) (h - 10) (\frac{18}{h - 9} + \frac{h}{h - 5})}{(h - 9) (h - 5) (h - 10) (\frac{4}{h - 10} - \frac{3}{h - 9})}$

Step 2

Apply the distributive property.

$\frac{(h - 9) (h - 5) (h - 10) \frac{18}{h - 9} + (h - 9) (h - 5) (h - 10) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3

Simplify by cancelling.

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Step 3.1

Cancel the common factor of $h - 9$ .

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Step 3.1.1

Factor $h - 9$ out of $(h - 9) (h - 5) (h - 10)$ .

$\frac{(h - 9) ((h - 5) (h - 10)) \frac{18}{h - 9} + (h - 9) (h - 5) (h - 10) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.1.2

Cancel the common factor.

$\frac{(h - 9) ((h - 5) (h - 10)) \frac{18}{h - 9} + (h - 9) (h - 5) (h - 10) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.1.3

Rewrite the expression.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 5) (h - 10) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.2

Cancel the common factor of $h - 5$ .

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Step 3.2.1

Factor $h - 5$ out of $(h - 9) (h - 5) (h - 10)$ .

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 5) ((h - 9) (h - 10)) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.2.2

Cancel the common factor.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 5) ((h - 9) (h - 10)) \frac{h}{h - 5}}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.2.3

Rewrite the expression.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) (h - 10) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.3

Cancel the common factor of $h - 10$ .

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Step 3.3.1

Factor $h - 10$ out of $(h - 9) (h - 5) (h - 10)$ .

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 10) ((h - 9) (h - 5)) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.3.2

Cancel the common factor.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 10) ((h - 9) (h - 5)) \frac{4}{h - 10} + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.3.3

Rewrite the expression.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 9) (h - 5) (h - 10) (- \frac{3}{h - 9})}$

Step 3.4

Cancel the common factor of $h - 9$ .

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Step 3.4.1

Move the leading negative in $- \frac{3}{h - 9}$ into the numerator.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 9) (h - 5) (h - 10) \frac{- 3}{h - 9}}$

Step 3.4.2

Factor $h - 9$ out of $(h - 9) (h - 5) (h - 10)$ .

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 9) ((h - 5) (h - 10)) \frac{- 3}{h - 9}}$

Step 3.4.3

Cancel the common factor.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 9) ((h - 5) (h - 10)) \frac{- 3}{h - 9}}$

Step 3.4.4

Rewrite the expression.

$\frac{(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4

Simplify the numerator.

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Step 4.1

Factor $h - 10$ out of $(h - 5) (h - 10) \cdot 18 + (h - 9) (h - 10) h$ .

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Step 4.1.1

Factor $h - 10$ out of $(h - 5) (h - 10) \cdot 18$ .

$\frac{(h - 10) ((h - 5) \cdot 18) + (h - 9) (h - 10) h}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.1.2

Factor $h - 10$ out of $(h - 9) (h - 10) h$ .

$\frac{(h - 10) ((h - 5) \cdot 18) + (h - 10) ((h - 9) h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.1.3

Factor $h - 10$ out of $(h - 10) ((h - 5) \cdot 18) + (h - 10) ((h - 9) h)$ .

$\frac{(h - 10) ((h - 5) \cdot 18 + (h - 9) h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.2

Apply the distributive property.

$\frac{(h - 10) (h \cdot 18 - 5 \cdot 18 + (h - 9) h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.3

Move $18$ to the left of $h$ .

$\frac{(h - 10) (18 \cdot h - 5 \cdot 18 + (h - 9) h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.4

Multiply $- 5$ by $18$ .

$\frac{(h - 10) (18 \cdot h - 90 + (h - 9) h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.5

Apply the distributive property.

$\frac{(h - 10) (18 h - 90 + h \cdot h - 9 h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.6

Multiply $h$ by $h$ .

$\frac{(h - 10) (18 h - 90 + h^{2} - 9 h)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.7

Subtract $9 h$ from $18 h$ .

$\frac{(h - 10) (9 h - 90 + h^{2})}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.8

Reorder terms.

$\frac{(h - 10) (h^{2} + 9 h - 90)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 4.9

Factor $h^{2} + 9 h - 90$ using the AC method.

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Step 4.9.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $- 90$ and whose sum is $9$ .

$- 6, 15$

Step 4.9.2

Write the factored form using these integers.

$\frac{(h - 10) ((h - 6) (h + 15))}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3}$

Step 5

Simplify the denominator.

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Step 5.1

Factor $h - 5$ out of $(h - 9) (h - 5) \cdot 4 + (h - 5) (h - 10) \cdot - 3$ .

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Step 5.1.1

Factor $h - 5$ out of $(h - 9) (h - 5) \cdot 4$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) ((h - 9) \cdot 4) + (h - 5) (h - 10) \cdot - 3}$

Step 5.1.2

Factor $h - 5$ out of $(h - 5) (h - 10) \cdot - 3$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) ((h - 9) \cdot 4) + (h - 5) ((h - 10) \cdot - 3)}$

Step 5.1.3

Factor $h - 5$ out of $(h - 5) ((h - 9) \cdot 4) + (h - 5) ((h - 10) \cdot - 3)$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) ((h - 9) \cdot 4 + (h - 10) \cdot - 3)}$

Step 5.2

Apply the distributive property.

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (h \cdot 4 - 9 \cdot 4 + (h - 10) \cdot - 3)}$

Step 5.3

Move $4$ to the left of $h$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (4 \cdot h - 9 \cdot 4 + (h - 10) \cdot - 3)}$

Step 5.4

Multiply $- 9$ by $4$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (4 \cdot h - 36 + (h - 10) \cdot - 3)}$

Step 5.5

Apply the distributive property.

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (4 h - 36 + h \cdot - 3 - 10 \cdot - 3)}$

Step 5.6

Move $- 3$ to the left of $h$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (4 h - 36 - 3 \cdot h - 10 \cdot - 3)}$

Step 5.7

Multiply $- 10$ by $- 3$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (4 h - 36 - 3 \cdot h + 30)}$

Step 5.8

Subtract $3 h$ from $4 h$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (h - 36 + 30)}$

Step 5.9

Add $- 36$ and $30$ .

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (h - 6)}$

Step 6

Cancel the common factor of $h - 6$ .

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Step 6.1

Cancel the common factor.

$\frac{(h - 10) (h - 6) (h + 15)}{(h - 5) (h - 6)}$

Step 6.2

Rewrite the expression.

$\frac{(h - 10) (h + 15)}{h - 5}$