What is the answer to (-45)/r =5 ?

The answer to (-45)/r =5 is r=-9

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(-45)/r =5

\frac{- 45}{r} = 5

r = - 9

Solution steps

\frac{- 45}{r} = 5

Simplify

\frac{- 45}{r} : - \frac{45}{r}

- \frac{45}{r} = 5

Multiply both sides by

r

- 45 = 5 r

Switch sides

5 r = - 45

Divide both sides by

5

r = - 9

Verify Solutions

Find undefined (singularity) points:

r = 0

Combine undefined points with solutions:

r = - 9

\frac{6 x}{3 x - 5} = \frac{2 x + 5}{x}

\frac{x}{x - 2} = 3 + \frac{2}{x - 2}

\frac{x ( 2 x - 1 )}{x + 2} = 12

\frac{x}{2 x + 2} = \frac{3}{x - 4}

1 - \frac{1}{x ^{2}} = \frac{4}{5}