15-3a=-7a+4

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Solution for 15-3a=-7a+4 equation: 



15-3a=-7a+4

We move all terms to the left:

15-3a-(-7a+4)=0

We get rid of parentheses

-3a+7a-4+15=0

We add all the numbers together, and all the variables

4a+11=0

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

4a=-11

a=-11/4

a=-2+3/4

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