y=2(-y+90)

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Solution for y=2(-y+90) equation: 



y=2(-y+90)

We move all terms to the left:

y-(2(-y+90))=0

We add all the numbers together, and all the variables

y-(2(-1y+90))=0



We calculate terms in parentheses: -(2(-1y+90)), so:

2(-1y+90)

We multiply parentheses

-2y+180

Back to the equation:

-(-2y+180)



We get rid of parentheses

y+2y-180=0

We add all the numbers together, and all the variables

3y-180=0

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

3y=180

y=180/3

y=60

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