Subtract 27/21 from 63/16, Solve 3 15/16

Subtract 27/21 from 63/16

1^st number: 3 15/16, 2^nd number: 1 6/21

63/16 - 27/21 is 297/112.

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

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
63/16 = 63 × 21/16 × 21 = 1323/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
27/21 = 27 × 16/21 × 16 = 432/336
Subtract the two like fractions:
1323/336 - 432/336 = 1323 - 432/336 = 891/336
After reducing the fraction, the answer is 297/112
In mixed form: 273/112

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