-132=-3a-9a

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Solution for -132=-3a-9a equation:


-132=-3a-9a

We simplify the equation to the form, which is simple to understand 
-132=-3a-9a

We move all terms containing a to the left and all other terms to the right. 
+3a+9a=+132

We simplify left and right side of the equation. 
+12a=+132

We divide both sides of the equation by 12 to get a. 
a=11

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