Subtract 35/63 from 28/20, Solve 1 8/20

Subtract 35/63 from 28/20

1^st number: 1 8/20, 2^nd number: 35/63

28/20 - 35/63 is 38/45.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 20 × 63 = 1260,
28/20 = 28 × 63/20 × 63 = 1764/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
35/63 = 35 × 20/63 × 20 = 700/1260
Subtract the two like fractions:
1764/1260 - 700/1260 = 1764 - 700/1260 = 1064/1260
After reducing the fraction, the answer is 38/45

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