-15-2a=-8a-7(-6a-3)

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Solution for -15-2a=-8a-7(-6a-3) equation:


-15-2a=-8a-7(-6a-3)

We simplify the equation to the form, which is simple to understand 
-15-2a=-8a-7(-6a-3)

Reorder the terms in parentheses
-15-2a=-8a+(+42a+21)

Remove unnecessary parentheses
-15-2a=-8a+42a+21

We move all terms containing a to the left and all other terms to the right. 
-2a+8a-42a=+21+15

We simplify left and right side of the equation. 
-36a=+36

We divide both sides of the equation by -36 to get a. 
a=-1

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