Subtract 81/42 from 1/3
1st number: 1/3, 2nd number: 1 39/42
1/3 - 81/42 is -67/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
1/3 = 1 × 14/3 × 14 = 14/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Subtract the two like fractions:
14/42 - 81/42 = 14 - 81/42 = -67/42
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