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2.8c-5=4.9c+7.39
We move all terms to the left:
2.8c-5-(4.9c+7.39)=0
We get rid of parentheses
2.8c-4.9c-7.39-5=0
We add all the numbers together, and all the variables
-2.1c-12.39=0
We move all terms containing c to the left, all other terms to the right
-2.1c=12.39
c=12.39/-2.1
c=-5+1/1.1111111111111
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