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12c-18.2=100
We move all terms to the left:
12c-18.2-(100)=0
We add all the numbers together, and all the variables
12c-118.2=0
We move all terms containing c to the left, all other terms to the right
12c=118.2
c=118.2/12
c=9+4.6363636363636/5.4545454545454
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