120=y-0.2y

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Solution for 120=y-0.2y equation: 



120=y-0.2y

We move all terms to the left:

120-(y-0.2y)=0

We add all the numbers together, and all the variables

-(+0.8y)+120=0

We get rid of parentheses

-0.8y+120=0

We move all terms containing y to the left, all other terms to the right

-0.8y=-120

y=-120/-0.8

y=+150

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