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-15c+7c+3=3c-8c
We move all terms to the left:
-15c+7c+3-(3c-8c)=0
We add all the numbers together, and all the variables
-15c+7c-(-5c)+3=0
We add all the numbers together, and all the variables
-8c-(-5c)+3=0
We get rid of parentheses
-8c+5c+3=0
We add all the numbers together, and all the variables
-3c+3=0
We move all terms containing c to the left, all other terms to the right
-3c=-3
c=-3/-3
c=1
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