Subtract 18/20 from 35/63, Solve 35/63

Subtract 18/20 from 35/63

35/63 - 18/20 is -31/90.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 63 × 20 = 1260,
35/63 = 35 × 20/63 × 20 = 700/1260
Likewise, for the 2nd fraction, since 20 × 63 = 1260,
18/20 = 18 × 63/20 × 63 = 1134/1260
Subtract the two like fractions:
700/1260 - 1134/1260 = 700 - 1134/1260 = -434/1260
After reducing the fraction, the answer is -31/90

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