Subtract 21/63 from 7/64
7/64 - 21/63 is -43/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 63 is 4032
Next, find the equivalent fraction of both fractional numbers with denominator 4032 - For the 1st fraction, since 64 × 63 = 4032,
7/64 = 7 × 63/64 × 63 = 441/4032 - Likewise, for the 2nd fraction, since 63 × 64 = 4032,
21/63 = 21 × 64/63 × 64 = 1344/4032 - Subtract the two like fractions:
441/4032 - 1344/4032 = 441 - 1344/4032 = -903/4032 - After reducing the fraction, the answer is -43/192
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