-3a-+9=-2-15

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Solution for -3a-+9=-2-15 equation: 



-3a-+9=-2-15

We move all terms to the left:

-3a-+9-(-2-15)=0

We add all the numbers together, and all the variables

-3a+9--(-17)=0

We add all the numbers together, and all the variables

-3a-8=0

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

-3a=8

a=8/-3

a=-2+2/3

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