-3-3a+7a=-15+3a

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



-3-3a+7a=-15+3a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

4a-(3a-15)-3=0

We get rid of parentheses

4a-3a+15-3=0

We add all the numbers together, and all the variables

a+12=0

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

a=-12

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