-7+8a-8a=-15+2a

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Solution for -7+8a-8a=-15+2a equation: 



-7+8a-8a=-15+2a

We move all terms to the left:

-7+8a-8a-(-15+2a)=0

We add all the numbers together, and all the variables

8a-8a-(2a-15)-7=0

We add all the numbers together, and all the variables

-(2a-15)-7=0

We get rid of parentheses

-2a+15-7=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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