15+7a=-1+8(1+a)

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Solution for 15+7a=-1+8(1+a) equation:


15+7a=-1+8(1+a)

We simplify the equation to the form, which is simple to understand 
15+7a=-1+8(1+a)

Reorder the terms in parentheses
15+7a=-1+(+8+8a)

Remove unnecessary parentheses
+15+7a=-1+8+8a

We move all terms containing a to the left and all other terms to the right. 
+7a-8a=-1+8-15

We simplify left and right side of the equation. 
-1a=-8

We divide both sides of the equation by -1 to get a. 
a=8

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