Solve for c
c=51.95
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c-51=\frac{19.95}{21}
Divide both sides by 21.
c-51=\frac{1995}{2100}
Expand \frac{19.95}{21} by multiplying both numerator and the denominator by 100.
c-51=\frac{19}{20}
Reduce the fraction \frac{1995}{2100} to lowest terms by extracting and canceling out 105.
c=\frac{19}{20}+51
Add 51 to both sides.
c=\frac{19}{20}+\frac{1020}{20}
Convert 51 to fraction \frac{1020}{20}.
c=\frac{19+1020}{20}
Since \frac{19}{20} and \frac{1020}{20} have the same denominator, add them by adding their numerators.
c=\frac{1039}{20}
Add 19 and 1020 to get 1039.
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