-4(5a-7)=128

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Solution for -4(5a-7)=128 equation:


-4(5a-7)=128

We simplify the equation to the form, which is simple to understand 
-4(5a-7)=128

Reorder the terms in parentheses
+(-20a+28)=128

Remove unnecessary parentheses
-20a+28=+128

We move all terms containing a to the left and all other terms to the right. 
-20a=+128-28

We simplify left and right side of the equation. 
-20a=+100

We divide both sides of the equation by -20 to get a. 
a=-5

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