Subtract 21/64 from 21/75
21/75 - 21/64 is -77/1600.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 64 is 4800
Next, find the equivalent fraction of both fractional numbers with denominator 4800 - For the 1st fraction, since 75 × 64 = 4800,
21/75 = 21 × 64/75 × 64 = 1344/4800 - Likewise, for the 2nd fraction, since 64 × 75 = 4800,
21/64 = 21 × 75/64 × 75 = 1575/4800 - Subtract the two like fractions:
1344/4800 - 1575/4800 = 1344 - 1575/4800 = -231/4800 - After reducing the fraction, the answer is -77/1600
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