Subtract 3/12 from 21/16
1st number: 1 5/16, 2nd number: 3/12
21/16 - 3/12 is 17/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 16 × 3 = 48,
21/16 = 21 × 3/16 × 3 = 63/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
3/12 = 3 × 4/12 × 4 = 12/48 - Subtract the two like fractions:
63/48 - 12/48 = 63 - 12/48 = 51/48 - After reducing the fraction, the answer is 17/16
- In mixed form: 11/16
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