Subtract 81/42 from 4/3
1st number: 1 1/3, 2nd number: 1 39/42
4/3 - 81/42 is -25/42.
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,
4/3 = 4 × 14/3 × 14 = 56/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Subtract the two like fractions:
56/42 - 81/42 = 56 - 81/42 = -25/42
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