-9+3=-(a+1-)-2

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Solution for -9+3=-(a+1-)-2 equation: 



-9+3=-(a+1-)-2

We move all terms to the left:

-9+3-(-(a+1-)-2)=0

We add all the numbers together, and all the variables

-(-(+a)-2)-9+3=0

We add all the numbers together, and all the variables

-(-(+a)-2)-6=0



We calculate terms in parentheses: -(-(+a)-2), so:

-(+a)-2

We get rid of parentheses

-a-2

We add all the numbers together, and all the variables

-1a-2

Back to the equation:

-(-1a-2)



We get rid of parentheses

1a+2-6=0

We add all the numbers together, and all the variables

a-4=0

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

a=4

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