8=4y+20-7y

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Solution for 8=4y+20-7y equation: 



8=4y+20-7y

We move all terms to the left:

8-(4y+20-7y)=0

We add all the numbers together, and all the variables

-(-3y+20)+8=0

We get rid of parentheses

3y-20+8=0

We add all the numbers together, and all the variables

3y-12=0

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

3y=12

y=12/3

y=4

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