-6a+3(5a+3)=81

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Solution for -6a+3(5a+3)=81 equation:


-6a+3(5a+3)=81

We simplify the equation to the form, which is simple to understand 
-6a+3(5a+3)=81

Reorder the terms in parentheses
-6a+(+15a+9)=81

Remove unnecessary parentheses
-6a+15a+9=+81

We move all terms containing a to the left and all other terms to the right. 
-6a+15a=+81-9

We simplify left and right side of the equation. 
+9a=+72

We divide both sides of the equation by 9 to get a. 
a=8

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