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12=4c-3c+10
We move all terms to the left:
12-(4c-3c+10)=0
We add all the numbers together, and all the variables
-(c+10)+12=0
We get rid of parentheses
-c-10+12=0
We add all the numbers together, and all the variables
-1c+2=0
We move all terms containing c to the left, all other terms to the right
-c=-2
c=-2/-1
c=+2
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