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4c+5.7=12
We move all terms to the left:
4c+5.7-(12)=0
We add all the numbers together, and all the variables
4c-6.3=0
We move all terms containing c to the left, all other terms to the right
4c=6.3
c=6.3/4
c=1+1/1.7391304347826
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