-3a+8+7a=4a-2a

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Solution for -3a+8+7a=4a-2a equation: 



-3a+8+7a=4a-2a

We move all terms to the left:

-3a+8+7a-(4a-2a)=0

We add all the numbers together, and all the variables

-3a+7a-(+2a)+8=0

We add all the numbers together, and all the variables

4a-(+2a)+8=0

We get rid of parentheses

4a-2a+8=0

We add all the numbers together, and all the variables

2a+8=0

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

2a=-8

a=-8/2

a=-4

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