3-8a=15-7a

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Solution for 3-8a=15-7a equation: 



3-8a=15-7a

We move all terms to the left:

3-8a-(15-7a)=0

We add all the numbers together, and all the variables

-8a-(-7a+15)+3=0

We get rid of parentheses

-8a+7a-15+3=0

We add all the numbers together, and all the variables

-1a-12=0

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

-a=12

a=12/-1

a=-12

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