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12(1+7a)=-12(4a-1)
We simplify the equation to the form, which is simple to understand
12(1+7a)=-12(4a-1)
Reorder the terms in parentheses
+(+12+84a)=-12*(4a-1)
Remove unnecessary parentheses
+12+84a=-12+*(+4a-1+)
Reorder the terms in parentheses
+12+84a=+(-48a+12)
Remove unnecessary parentheses
+12+84a=-48a+12
We move all terms containing a to the left and all other terms to the right.
+84a+48a=+12-12
We simplify left and right side of the equation.
+132a=0
We divide both sides of the equation by 132 to get a.
a=0
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