-3(a-4)=-3(2+7a)

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Solution for -3(a-4)=-3(2+7a) equation:


-3(a-4)=-3(2+7a)

We simplify the equation to the form, which is simple to understand 
-3(a-4)=-3(2+7a)

Reorder the terms in parentheses
+(-3a+12)=-3*(2+7a)

Remove unnecessary parentheses
-3a+12=-3+*(+2+7a+)

Reorder the terms in parentheses
-3a+12=+(-6-21a)

Remove unnecessary parentheses
-3a+12=-6-21a

We move all terms containing a to the left and all other terms to the right. 
-3a+21a=-6-12

We simplify left and right side of the equation. 
+18a=-18

We divide both sides of the equation by 18 to get a. 
a=-1

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