What is the answer to 20=(y*40)/(y+12) ?

The answer to 20=(y*40)/(y+12) is y=12

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20=(y*40)/(y+12)

20 = \frac{y \cdot 40}{y + 12}

y = 12

Solution steps

20 = \frac{y \cdot 40}{y + 12}

Multiply both sides by

y + 12

20 (y + 12) = 40 y

Expand

20 (y + 12) : 20 y + 240

20 y + 240 = 40 y

Move

240

to the right side

20 y = 40 y - 240

Move

40 y

to the left side

- 20 y = - 240

Divide both sides by

- 20

y = 12

Verify Solutions

Find undefined (singularity) points:

y = - 12

Combine undefined points with solutions:

y = 12

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