-y=-20+3y

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Solution for -y=-20+3y equation: 



-y=-20+3y

We move all terms to the left:

-y-(-20+3y)=0

We add all the numbers together, and all the variables

-y-(3y-20)=0

We add all the numbers together, and all the variables

-1y-(3y-20)=0

We get rid of parentheses

-1y-3y+20=0

We add all the numbers together, and all the variables

-4y+20=0

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

-4y=-20

y=-20/-4

y=+5

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