-3(a+2)+9=-12

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Solution for -3(a+2)+9=-12 equation:


-3 (a+2)+9=-12

We simplify the equation to the form, which is simple to understand 
-3(a+2)+9=-12

Reorder the terms in parentheses
+(-3a-6)+9=-12

Remove unnecessary parentheses
-3a-6+9=-12

We move all terms containing a to the left and all other terms to the right. 
-3a=-12+6-9

We simplify left and right side of the equation. 
-3a=-15

We divide both sides of the equation by -3 to get a. 
a=5

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