-a-3=-1

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Solution for -a-3=-1 equation:


-a-3=-1

We simplify the equation to the form, which is simple to understand 
-a-3=-1

We move all terms containing a to the left and all other terms to the right. 
-1a=-1+3

We simplify left and right side of the equation. 
-1a=+2

We divide both sides of the equation by -1 to get a. 
a=-2

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