Subtract 81/27 from 5/28
1st number: 5/28, 2nd number: 3 0/27
5/28 - 81/27 is -79/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
5/28 = 5 × 27/28 × 27 = 135/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
81/27 = 81 × 28/27 × 28 = 2268/756 - Subtract the two like fractions:
135/756 - 2268/756 = 135 - 2268/756 = -2133/756 - After reducing the fraction, the answer is -79/28
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