Subtract 5/16 from 63/21, Solve 3 0/21

Subtract 5/16 from 63/21

1^st number: 3 0/21, 2^nd number: 5/16

63/21 - 5/16 is 43/16.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
63/21 = 63 × 16/21 × 16 = 1008/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
5/16 = 5 × 21/16 × 21 = 105/336
Subtract the two like fractions:
1008/336 - 105/336 = 1008 - 105/336 = 903/336
After reducing the fraction, the answer is 43/16
In mixed form: 211/16

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