21+a=-8-6(1+a)

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Solution for 21+a=-8-6(1+a) equation:


21+a=-8-6(1+a)

We simplify the equation to the form, which is simple to understand 
21+a=-8-6(1+a)

Reorder the terms in parentheses
21+a=-8+(-6-6a)

Remove unnecessary parentheses
+21+a=-8-6-6a

We move all terms containing a to the left and all other terms to the right. 
+1a+6a=-8-6-21

We simplify left and right side of the equation. 
+7a=-35

We divide both sides of the equation by 7 to get a. 
a=-5

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