12-3a=4a+5

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Solution for 12-3a=4a+5 equation: 



12-3a=4a+5

We move all terms to the left:

12-3a-(4a+5)=0

We get rid of parentheses

-3a-4a-5+12=0

We add all the numbers together, and all the variables

-7a+7=0

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

-7a=-7

a=-7/-7

a=1

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