-3+9=y-1

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Solution for -3+9=y-1 equation: 



-3+9=y-1

We move all terms to the left:

-3+9-(y-1)=0

We add all the numbers together, and all the variables

-(y-1)+6=0

We get rid of parentheses

-y+1+6=0

We add all the numbers together, and all the variables

-1y+7=0

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

-y=-7

y=-7/-1

y=+7

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