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c+2.54.3c=1.8
We move all terms to the left:
c+2.54.3c-(1.8)=0
We add all the numbers together, and all the variables
1.762c-1.8=0
We move all terms containing c to the left, all other terms to the right
1.762c=1.8
c=1.8/1.762
c=1+0.038/1.762
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