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4c/10=3
We move all terms to the left:
4c/10-(3)=0
We multiply all the terms by the denominator
4c-3*10=0
We add all the numbers together, and all the variables
4c-30=0
We move all terms containing c to the left, all other terms to the right
4c=30
c=30/4
c=7+1/2
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