Subtract 63/64 from 5/7
5/7 - 63/64 is -121/448.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 64 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 7 × 64 = 448,
5/7 = 5 × 64/7 × 64 = 320/448 - Likewise, for the 2nd fraction, since 64 × 7 = 448,
63/64 = 63 × 7/64 × 7 = 441/448 - Subtract the two like fractions:
320/448 - 441/448 = 320 - 441/448 = -121/448
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