Subtract 42/9 from 81/24
1st number: 3 9/24, 2nd number: 4 6/9
81/24 - 42/9 is -31/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
81/24 = 81 × 3/24 × 3 = 243/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Subtract the two like fractions:
243/72 - 336/72 = 243 - 336/72 = -93/72 - After reducing the fraction, the answer is -31/24
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