3a-12+2a=-3a

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Solution for 3a-12+2a=-3a equation:



3a-12+2a=-3a
We move all terms to the left:
3a-12+2a-(-3a)=0
We add all the numbers together, and all the variables
5a-(-3a)-12=0
We get rid of parentheses
5a+3a-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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