1=-1-a

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Solution for 1=-1-a equation: 



1=-1-a

We move all terms to the left:

1-(-1-a)=0

We add all the numbers together, and all the variables

-(-1a-1)+1=0

We get rid of parentheses

1a+1+1=0

We add all the numbers together, and all the variables

a+2=0

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

a=-2

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