Subtract 81/64 from 5/42
1st number: 5/42, 2nd number: 1 17/64
5/42 - 81/64 is -1541/1344.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
5/42 = 5 × 32/42 × 32 = 160/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
81/64 = 81 × 21/64 × 21 = 1701/1344 - Subtract the two like fractions:
160/1344 - 1701/1344 = 160 - 1701/1344 = -1541/1344
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