-20=-4+4y

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Solution for -20=-4+4y equation: 



-20=-4+4y

We move all terms to the left:

-20-(-4+4y)=0

We add all the numbers together, and all the variables

-(4y-4)-20=0

We get rid of parentheses

-4y+4-20=0

We add all the numbers together, and all the variables

-4y-16=0

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

-4y=16

y=16/-4

y=-4

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