-280=-8(4a+7)

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Solution for -280=-8(4a+7) equation:


-280=-8(4a+7)

We simplify the equation to the form, which is simple to understand 
-280=-8(4a+7)

Reorder the terms in parentheses
-280=+(-32a-56)

Remove unnecessary parentheses
-280=-32a-56

We move all terms containing a to the left and all other terms to the right. 
+32a=-56+280

We simplify left and right side of the equation. 
+32a=+224

We divide both sides of the equation by 032 to get a. 
a=7

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