Subtract 56/63 from 1/20, Solve 1/20

Subtract 56/63 from 1/20

1/20 - 56/63 is -151/180.

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,
1/20 = 1 × 63/20 × 63 = 63/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
56/63 = 56 × 20/63 × 20 = 1120/1260
Subtract the two like fractions:
63/1260 - 1120/1260 = 63 - 1120/1260 = -1057/1260
After reducing the fraction, the answer is -151/180

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