Subtract 49/64 from 4/21
4/21 - 49/64 is -773/1344.
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,
4/21 = 4 × 64/21 × 64 = 256/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
49/64 = 49 × 21/64 × 21 = 1029/1344 - Subtract the two like fractions:
256/1344 - 1029/1344 = 256 - 1029/1344 = -773/1344
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