6a-8a-12=7a

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Solution for 6a-8a-12=7a equation: 



6a-8a-12=7a

We move all terms to the left:

6a-8a-12-(7a)=0

We add all the numbers together, and all the variables

-9a-12=0

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

-9a=12

a=12/-9

a=-1+1/3

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