7(y+1)=9y-1

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Solution for 7(y+1)=9y-1 equation: 



7(y+1)=9y-1

We move all terms to the left:

7(y+1)-(9y-1)=0

We multiply parentheses

7y-(9y-1)+7=0

We get rid of parentheses

7y-9y+1+7=0

We add all the numbers together, and all the variables

-2y+8=0

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

-2y=-8

y=-8/-2

y=+4

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