Subtract 63/28 from 21/64
1st number: 21/64, 2nd number: 2 7/28
21/64 - 63/28 is -123/64.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 28 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 64 × 7 = 448,
21/64 = 21 × 7/64 × 7 = 147/448 - Likewise, for the 2nd fraction, since 28 × 16 = 448,
63/28 = 63 × 16/28 × 16 = 1008/448 - Subtract the two like fractions:
147/448 - 1008/448 = 147 - 1008/448 = -861/448 - After reducing the fraction, the answer is -123/64
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