Subtract 81/21 from 27/24
1st number: 1 3/24, 2nd number: 3 18/21
27/24 - 81/21 is -153/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
81/21 = 81 × 8/21 × 8 = 648/168 - Subtract the two like fractions:
189/168 - 648/168 = 189 - 648/168 = -459/168 - After reducing the fraction, the answer is -153/56
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