Subtract 81/35 from 27/28
1st number: 27/28, 2nd number: 2 11/35
27/28 - 81/35 is -27/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
27/28 = 27 × 5/28 × 5 = 135/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
81/35 = 81 × 4/35 × 4 = 324/140 - Subtract the two like fractions:
135/140 - 324/140 = 135 - 324/140 = -189/140 - After reducing the fraction, the answer is -27/20
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