Subtract 42/16 from 4/63, Solve 4/63

Subtract 42/16 from 4/63

1^st number: 4/63, 2^nd number: 2 10/16

4/63 - 42/16 is -1291/504.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 16 is 1008

Next, find the equivalent fraction of both fractional numbers with denominator 1008
For the 1st fraction, since 63 × 16 = 1008,
4/63 = 4 × 16/63 × 16 = 64/1008
Likewise, for the 2nd fraction, since 16 × 63 = 1008,
42/16 = 42 × 63/16 × 63 = 2646/1008
Subtract the two like fractions:
64/1008 - 2646/1008 = 64 - 2646/1008 = -2582/1008
After reducing the fraction, the answer is -1291/504

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