4y-4+y+21=8y+20-6y

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Solution for 4y-4+y+21=8y+20-6y equation: 



4y-4+y+21=8y+20-6y

We move all terms to the left:

4y-4+y+21-(8y+20-6y)=0

We add all the numbers together, and all the variables

4y+y-(2y+20)-4+21=0

We add all the numbers together, and all the variables

5y-(2y+20)+17=0

We get rid of parentheses

5y-2y-20+17=0

We add all the numbers together, and all the variables

3y-3=0

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

3y=3

y=3/3

y=1

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