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7+4c=7c+c
We move all terms to the left:
7+4c-(7c+c)=0
We add all the numbers together, and all the variables
4c-(+8c)+7=0
We get rid of parentheses
4c-8c+7=0
We add all the numbers together, and all the variables
-4c+7=0
We move all terms containing c to the left, all other terms to the right
-4c=-7
c=-7/-4
c=1+3/4
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