a-3=-12

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Solution for a-3=-12 equation:


a-3=-12

We simplify the equation to the form, which is simple to understand 
a-3=-12

We move all terms containing a to the left and all other terms to the right. 
+1a=-12+3

We simplify left and right side of the equation. 
+1a=-9

We divide both sides of the equation by 1 to get a. 
a=-9

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