Subtract 81/24 from 42/8
1st number: 5 2/8, 2nd number: 3 9/24
42/8 - 81/24 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
42/8 = 42 × 3/8 × 3 = 126/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
81/24 = 81 × 1/24 × 1 = 81/24 - Subtract the two like fractions:
126/24 - 81/24 = 126 - 81/24 = 45/24 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
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