Subtract 7/20 from 28/63, Solve 28/63

Subtract 7/20 from 28/63

28/63 - 7/20 is 17/180.

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,
28/63 = 28 × 20/63 × 20 = 560/1260
Likewise, for the 2nd fraction, since 20 × 63 = 1260,
7/20 = 7 × 63/20 × 63 = 441/1260
Subtract the two like fractions:
560/1260 - 441/1260 = 560 - 441/1260 = 119/1260
After reducing the fraction, the answer is 17/180

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