What is the answer to -2/(5y)=4 ?

The answer to -2/(5y)=4 is y=-1/10

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-2/(5y)=4

- \frac{2}{5 y} = 4

y = - \frac{1}{10}

Decimal Notation

y = - 0.1

Solution steps

- \frac{2}{5 y} = 4

Multiply both sides by

y

- \frac{2}{5} = 4 y

Switch sides

4 y = - \frac{2}{5}

Divide both sides by

4

y = - \frac{1}{10}

Verify Solutions

Find undefined (singularity) points:

y = 0

Combine undefined points with solutions:

y = - \frac{1}{10}

a^{- 2} = \frac{1}{16}

\frac{x - 1}{3} = \frac{x + 5}{x - 1}

27 x^{- 2} = 81 x

\frac{1}{2} = \frac{5}{x}, x

j, z = \frac{2 - j}{1 + j ^{2}}