Subtract 49/20 from 56/63, Solve 56/63

Subtract 49/20 from 56/63

1^st number: 56/63, 2^nd number: 2 9/20

56/63 - 49/20 is -281/180.

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,
56/63 = 56 × 20/63 × 20 = 1120/1260
Likewise, for the 2nd fraction, since 20 × 63 = 1260,
49/20 = 49 × 63/20 × 63 = 3087/1260
Subtract the two like fractions:
1120/1260 - 3087/1260 = 1120 - 3087/1260 = -1967/1260
After reducing the fraction, the answer is -281/180

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