Subtract 56/24 from 81/21
1st number: 3 18/21, 2nd number: 2 8/24
81/21 - 56/24 is 32/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
81/21 = 81 × 8/21 × 8 = 648/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
56/24 = 56 × 7/24 × 7 = 392/168 - Subtract the two like fractions:
648/168 - 392/168 = 648 - 392/168 = 256/168 - After reducing the fraction, the answer is 32/21
- In mixed form: 111/21
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