3y-1+y+21=6y+20-4y

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Solution for 3y-1+y+21=6y+20-4y equation: 



3y-1+y+21=6y+20-4y

We move all terms to the left:

3y-1+y+21-(6y+20-4y)=0

We add all the numbers together, and all the variables

3y+y-(2y+20)-1+21=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

4y-2y-20+20=0

We add all the numbers together, and all the variables

2y=0

y=0/2

y=0

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