Basic Math Examples

${(- 7 y)}^{\frac{- 1}{5}} - 7 y^{\frac{- 1}{5}} {(- 7 y)}^{\frac{1}{5}}$

Step 1

Move the negative in front of the fraction.

${(- 7 y)}^{- \frac{1}{5}} - 7 y^{\frac{- 1}{5}} {(- 7 y)}^{\frac{1}{5}}$

Step 2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{{(- 7 y)}^{\frac{1}{5}}} - 7 y^{\frac{- 1}{5}} {(- 7 y)}^{\frac{1}{5}}$

Step 3

Apply the product rule to $- 7 y$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - 7 y^{\frac{- 1}{5}} {(- 7 y)}^{\frac{1}{5}}$

Step 4

Move the negative in front of the fraction.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - 7 y^{- \frac{1}{5}} {(- 7 y)}^{\frac{1}{5}}$

Step 5

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - 7 \frac{1}{y^{\frac{1}{5}}} {(- 7 y)}^{\frac{1}{5}}$

Step 6

Combine $- 7$ and $\frac{1}{y^{\frac{1}{5}}}$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + \frac{- 7}{y^{\frac{1}{5}}} {(- 7 y)}^{\frac{1}{5}}$

Step 7

Move the negative in front of the fraction.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - \frac{7}{y^{\frac{1}{5}}} {(- 7 y)}^{\frac{1}{5}}$

Step 8

Apply the product rule to $- 7 y$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - \frac{7}{y^{\frac{1}{5}}} ({(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}})$

Step 9

Cancel the common factor of $y^{\frac{1}{5}}$ .

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Step 9.1

Move the leading negative in $- \frac{7}{y^{\frac{1}{5}}}$ into the numerator.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + \frac{- 7}{y^{\frac{1}{5}}} ({(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}})$

Step 9.2

Factor $y^{\frac{1}{5}}$ out of ${(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + \frac{- 7}{y^{\frac{1}{5}}} (y^{\frac{1}{5}} {(- 7)}^{\frac{1}{5}})$

Step 9.3

Cancel the common factor.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + \frac{- 7}{y^{\frac{1}{5}}} (y^{\frac{1}{5}} {(- 7)}^{\frac{1}{5}})$

Step 9.4

Rewrite the expression.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} - 7 {(- 7)}^{\frac{1}{5}}$

Step 10

Multiply $- 7$ by ${(- 7)}^{\frac{1}{5}}$ by adding the exponents.

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Step 10.1

Multiply $- 7$ by ${(- 7)}^{\frac{1}{5}}$ .

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Step 10.1.1

Raise $- 7$ to the power of $1$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + {(- 7)}^{1} {(- 7)}^{\frac{1}{5}}$

Step 10.1.2

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

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + {(- 7)}^{1 + \frac{1}{5}}$

Step 10.2

Write $1$ as a fraction with a common denominator.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + {(- 7)}^{\frac{5}{5} + \frac{1}{5}}$

Step 10.3

Combine the numerators over the common denominator.

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + {(- 7)}^{\frac{5 + 1}{5}}$

Step 10.4

Add $5$ and $1$ .

$\frac{1}{{(- 7)}^{\frac{1}{5}} y^{\frac{1}{5}}} + {(- 7)}^{\frac{6}{5}}$