Subtract 21/64 from 28/21
1st number: 1 7/21, 2nd number: 21/64
28/21 - 21/64 is 193/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 21 × 64 = 1344,
28/21 = 28 × 64/21 × 64 = 1792/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
21/64 = 21 × 21/64 × 21 = 441/1344 - Subtract the two like fractions:
1792/1344 - 441/1344 = 1792 - 441/1344 = 1351/1344 - After reducing the fraction, the answer is 193/192
- In mixed form: 11/192
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