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2=3c+-7
We move all terms to the left:
2-(3c+-7)=0
We add all the numbers together, and all the variables
-(3c-7)+2=0
We get rid of parentheses
-3c+7+2=0
We add all the numbers together, and all the variables
-3c+9=0
We move all terms containing c to the left, all other terms to the right
-3c=-9
c=-9/-3
c=+3
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