3y=y-20

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Solution for 3y=y-20 equation: 



3y=y-20

We move all terms to the left:

3y-(y-20)=0

We get rid of parentheses

3y-y+20=0

We add all the numbers together, and all the variables

2y+20=0

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

2y=-20

y=-20/2

y=-10

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