Subtract 21/72 from 63/16, Solve 3 15/16

Subtract 21/72 from 63/16

1^st number: 3 15/16, 2^nd number: 21/72

63/16 - 21/72 is 175/48.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 72 is 144

Next, find the equivalent fraction of both fractional numbers with denominator 144
For the 1st fraction, since 16 × 9 = 144,
63/16 = 63 × 9/16 × 9 = 567/144
Likewise, for the 2nd fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144
Subtract the two like fractions:
567/144 - 42/144 = 567 - 42/144 = 525/144
After reducing the fraction, the answer is 175/48
In mixed form: 331/48

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