6y-7-y=21+3y

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Solution for 6y-7-y=21+3y equation: 



6y-7-y=21+3y

We move all terms to the left:

6y-7-y-(21+3y)=0

We add all the numbers together, and all the variables

6y-y-(3y+21)-7=0

We add all the numbers together, and all the variables

5y-(3y+21)-7=0

We get rid of parentheses

5y-3y-21-7=0

We add all the numbers together, and all the variables

2y-28=0

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

2y=28

y=28/2

y=14

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