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500c+165=135+100c
We move all terms to the left:
500c+165-(135+100c)=0
We add all the numbers together, and all the variables
500c-(100c+135)+165=0
We get rid of parentheses
500c-100c-135+165=0
We add all the numbers together, and all the variables
400c+30=0
We move all terms containing c to the left, all other terms to the right
400c=-30
c=-30/400
c=-3/40
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