Subtract 63/42 from 81/24
1st number: 3 9/24, 2nd number: 1 21/42
81/24 - 63/42 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
81/24 = 81 × 7/24 × 7 = 567/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
63/42 = 63 × 4/42 × 4 = 252/168 - Subtract the two like fractions:
567/168 - 252/168 = 567 - 252/168 = 315/168 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
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