Subtract 21/64 from 8/84
8/84 - 21/64 is -313/1344.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 84 × 16 = 1344,
8/84 = 8 × 16/84 × 16 = 128/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
21/64 = 21 × 21/64 × 21 = 441/1344 - Subtract the two like fractions:
128/1344 - 441/1344 = 128 - 441/1344 = -313/1344
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