5-2(a+7)=21

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Solution for 5-2(a+7)=21 equation:


5-2(a+7)=21

We simplify the equation to the form, which is simple to understand 
5-2(a+7)=21

Reorder the terms in parentheses
5+(-2a-14)=21

Remove unnecessary parentheses
+5-2a-14=+21

We move all terms containing a to the left and all other terms to the right. 
-2a=+21-5+14

We simplify left and right side of the equation. 
-2a=+30

We divide both sides of the equation by -2 to get a. 
a=-15

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