7y-84=2y+6y

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Solution for 7y-84=2y+6y equation: 



7y-84=2y+6y

We move all terms to the left:

7y-84-(2y+6y)=0

We add all the numbers together, and all the variables

7y-(+8y)-84=0

We get rid of parentheses

7y-8y-84=0

We add all the numbers together, and all the variables

-1y-84=0

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

-y=84

y=84/-1

y=-84

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