Solve for C
C=25
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75=C+C\times \frac{20}{10}
Multiply 20 and \frac{1}{10} to get \frac{20}{10}.
75=C+C\times 2
Divide 20 by 10 to get 2.
75=3C
Combine C and C\times 2 to get 3C.
3C=75
Swap sides so that all variable terms are on the left hand side.
C=\frac{75}{3}
Divide both sides by 3.
C=25
Divide 75 by 3 to get 25.
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