(3a+7)+(4a+5)=

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Solution for (3a+7)+(4a+5)= equation:


(3a+7)+(4a+5)=0

We simplify the equation to the form, which is simple to understand 
(3a+7)+(4a+5)=0

Remove unnecessary parentheses
3a+7+(4a+5)=0

Remove unnecessary parentheses
+3a+7+4a+5=0

We move all terms containing a to the left and all other terms to the right. 
+3a+4a=0-7-5

We simplify left and right side of the equation. 
+7a=-12

We divide both sides of the equation by 7 to get a. 
a=-1.71428571429

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