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3(a-1)=9(2a+2)
We simplify the equation to the form, which is simple to understand
3(a-1)=9(2a+2)
Reorder the terms in parentheses
+(+3a-3)=9*(2a+2)
Remove unnecessary parentheses
+3a-3=+9+*(+2a+2+)
Reorder the terms in parentheses
+3a-3=+(+18a+18)
Remove unnecessary parentheses
+3a-3=+18a+18
We move all terms containing a to the left and all other terms to the right.
+3a-18a=+18+3
We simplify left and right side of the equation.
-15a=+21
We divide both sides of the equation by -15 to get a.
a=-1.4
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