-3y=7-20

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Solution for -3y=7-20 equation: 



-3y=7-20

We move all terms to the left:

-3y-(7-20)=0

We add all the numbers together, and all the variables

-3y-(-13)=0

We add all the numbers together, and all the variables

-3y+13=0

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

-3y=-13

y=-13/-3

y=4+1/3

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