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7c-2.50=2.80
We move all terms to the left:
7c-2.50-(2.80)=0
We add all the numbers together, and all the variables
7c-2.50-(2.8)=0
We add all the numbers together, and all the variables
7c-5.3=0
We move all terms containing c to the left, all other terms to the right
7c=5.3
c=5.3/7
c=4.0769230769231/5.3846153846154
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