12-a=18+4a

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Solution for 12-a=18+4a equation: 



12-a=18+4a

We move all terms to the left:

12-a-(18+4a)=0

We add all the numbers together, and all the variables

-a-(4a+18)+12=0

We add all the numbers together, and all the variables

-1a-(4a+18)+12=0

We get rid of parentheses

-1a-4a-18+12=0

We add all the numbers together, and all the variables

-5a-6=0

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

-5a=6

a=6/-5

a=-1+1/5

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