Subtract 21/64 from 7/63
7/63 - 21/64 is -125/576.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 64 is 4032
Next, find the equivalent fraction of both fractional numbers with denominator 4032 - For the 1st fraction, since 63 × 64 = 4032,
7/63 = 7 × 64/63 × 64 = 448/4032 - Likewise, for the 2nd fraction, since 64 × 63 = 4032,
21/64 = 21 × 63/64 × 63 = 1323/4032 - Subtract the two like fractions:
448/4032 - 1323/4032 = 448 - 1323/4032 = -875/4032 - After reducing the fraction, the answer is -125/576
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