Subtract 81/54 from 2/84
1st number: 2/84, 2nd number: 1 27/54
2/84 - 81/54 is -31/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
2/84 = 2 × 9/84 × 9 = 18/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
81/54 = 81 × 14/54 × 14 = 1134/756 - Subtract the two like fractions:
18/756 - 1134/756 = 18 - 1134/756 = -1116/756 - After reducing the fraction, the answer is -31/21
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