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4c-7-9c=2c-11+7
We move all terms to the left:
4c-7-9c-(2c-11+7)=0
We add all the numbers together, and all the variables
4c-9c-(2c-4)-7=0
We add all the numbers together, and all the variables
-5c-(2c-4)-7=0
We get rid of parentheses
-5c-2c+4-7=0
We add all the numbers together, and all the variables
-7c-3=0
We move all terms containing c to the left, all other terms to the right
-7c=3
c=3/-7
c=-3/7
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