15-a+4a=-6a

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Solution for 15-a+4a=-6a equation: 



15-a+4a=-6a

We move all terms to the left:

15-a+4a-(-6a)=0

We add all the numbers together, and all the variables

3a-(-6a)+15=0

We get rid of parentheses

3a+6a+15=0

We add all the numbers together, and all the variables

9a+15=0

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

9a=-15

a=-15/9

a=-1+2/3

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