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4(3a-2)-12=9(2a-1)+1
We simplify the equation to the form, which is simple to understand
4(3a-2)-12=9(2a-1)+1
Reorder the terms in parentheses
+(+12a-8)-12=9*(2a-1)+1
Remove unnecessary parentheses
+12a-8-12=+9+*(+2a-1+)+1
Reorder the terms in parentheses
+12a-8-12=+(+18a-9)+1
Remove unnecessary parentheses
+12a-8-12=+18a-9+1
We move all terms containing a to the left and all other terms to the right.
+12a-18a=-9+1+8+12
We simplify left and right side of the equation.
-6a=+12
We divide both sides of the equation by -6 to get a.
a=-2
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