A=-1+a

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Solution for A=-1+a equation: 



=-1+A

We move all terms to the left:

-(-1+A)=0

We add all the numbers together, and all the variables

-(A-1)=0

We get rid of parentheses

-A+1=0

We add all the numbers together, and all the variables

-1A+1=0

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

-A=-1

A=-1/-1

A=1

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