15=-15a+4a

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



15=-15a+4a

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-11a)+15=0

We get rid of parentheses

11a+15=0

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

11a=-15

a=-15/11

a=-1+4/11

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