(160-3y)+y=120

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Solution for (160-3y)+y=120 equation: 



(160-3y)+y=120

We move all terms to the left:

(160-3y)+y-(120)=0

We add all the numbers together, and all the variables

(-3y+160)+y-120=0

We add all the numbers together, and all the variables

y+(-3y+160)-120=0

We get rid of parentheses

y-3y+160-120=0

We add all the numbers together, and all the variables

-2y+40=0

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

-2y=-40

y=-40/-2

y=+20

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