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51=21/c+49
We move all terms to the left:
51-(21/c+49)=0
Domain of the equation: c+49)!=0We get rid of parentheses
c∈R
-21/c-49+51=0
We multiply all the terms by the denominator
-49*c+51*c-21=0
We add all the numbers together, and all the variables
2c-21=0
We move all terms containing c to the left, all other terms to the right
2c=21
c=21/2
c=10+1/2
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