12a+3a=4a-12

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



12a+3a=4a-12

We move all terms to the left:

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

We add all the numbers together, and all the variables

15a-(4a-12)=0

We get rid of parentheses

15a-4a+12=0

We add all the numbers together, and all the variables

11a+12=0

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

11a=-12

a=-12/11

a=-1+1/11

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