12a-15a=8

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Solution for 12a-15a=8 equation: 



12a-15a=8

We move all terms to the left:

12a-15a-(8)=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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