4a-12a=12

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Solution for 4a-12a=12 equation: 



4a-12a=12

We move all terms to the left:

4a-12a-(12)=0

We add all the numbers together, and all the variables

-8a-12=0

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

-8a=12

a=12/-8

a=-1+1/2

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