-1+(-1y)=y

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



-1+(-1y)=y

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-1y-1y-1=0

We add all the numbers together, and all the variables

-2y-1=0

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

-2y=1

y=1/-2

y=-1/2

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