-20=8-4y

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Solution for -20=8-4y equation: 



-20=8-4y

We move all terms to the left:

-20-(8-4y)=0

We add all the numbers together, and all the variables

-(-4y+8)-20=0

We get rid of parentheses

4y-8-20=0

We add all the numbers together, and all the variables

4y-28=0

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

4y=28

y=28/4

y=7

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