10(4+a)-7=21

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Solution for 10(4+a)-7=21 equation:


10(4+a)-7=21

We simplify the equation to the form, which is simple to understand 
10(4+a)-7=21

Reorder the terms in parentheses
+(+40+10a)-7=21

Remove unnecessary parentheses
+40+10a-7=+21

We move all terms containing a to the left and all other terms to the right. 
+10a=+21-40+7

We simplify left and right side of the equation. 
+10a=-12

We divide both sides of the equation by 10 to get a. 
a=-1.2

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