Subtract 1/21 from 81/16
1st number: 5 1/16, 2nd number: 1/21
81/16 - 1/21 is 1685/336.
Steps for subtracting fractions
- 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,
81/16 = 81 × 21/16 × 21 = 1701/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Subtract the two like fractions:
1701/336 - 16/336 = 1701 - 16/336 = 1685/336 - In mixed form: 55/336
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