-3a-7=-1

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Solution for -3a-7=-1 equation:


-3a-7=-1

We simplify the equation to the form, which is simple to understand 
-3a-7=-1

We move all terms containing a to the left and all other terms to the right. 
-3a=-1+7

We simplify left and right side of the equation. 
-3a=+6

We divide both sides of the equation by -3 to get a. 
a=-2

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