Subtract 90/28 from 81/64
1st number: 1 17/64, 2nd number: 3 6/28
81/64 - 90/28 is -873/448.
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,
81/64 = 81 × 7/64 × 7 = 567/448 - Likewise, for the 2nd fraction, since 28 × 16 = 448,
90/28 = 90 × 16/28 × 16 = 1440/448 - Subtract the two like fractions:
567/448 - 1440/448 = 567 - 1440/448 = -873/448
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