Subtract 81/21 from 4/24
1st number: 4/24, 2nd number: 3 18/21
4/24 - 81/21 is -155/42.
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,
4/24 = 4 × 7/24 × 7 = 28/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
81/21 = 81 × 8/21 × 8 = 648/168 - Subtract the two like fractions:
28/168 - 648/168 = 28 - 648/168 = -620/168 - After reducing the fraction, the answer is -155/42
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