Subtract 81/7 from 27/28
1st number: 27/28, 2nd number: 11 4/7
27/28 - 81/7 is -297/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
27/28 = 27 × 1/28 × 1 = 27/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
81/7 = 81 × 4/7 × 4 = 324/28 - Subtract the two like fractions:
27/28 - 324/28 = 27 - 324/28 = -297/28
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