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12a-4(5a-1)=2(3a+6)-4a
We simplify the equation to the form, which is simple to understand
12a-4(5a-1)=2(3a+6)-4a
Reorder the terms in parentheses
12a+(-20a+4)=2*(3a+6)-4a
Remove unnecessary parentheses
+12a-20a+4=+2+*(+3a+6+)-4a
Reorder the terms in parentheses
12a-20a+4=+(+6a+12)-4a
Remove unnecessary parentheses
+12a-20a+4=+6a+12-4a
We move all terms containing a to the left and all other terms to the right.
+12a-20a-6a+4a=+12-4
We simplify left and right side of the equation.
-10a=+8
We divide both sides of the equation by -10 to get a.
a=-0.8
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