4a+7a=2a-15

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Solution for 4a+7a=2a-15 equation: 



4a+7a=2a-15

We move all terms to the left:

4a+7a-(2a-15)=0

We add all the numbers together, and all the variables

11a-(2a-15)=0

We get rid of parentheses

11a-2a+15=0

We add all the numbers together, and all the variables

9a+15=0

We move all terms containing a to the left, all other terms to the right

9a=-15

a=-15/9

a=-1+2/3

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