Subtract 81/72 from 20/24
1st number: 20/24, 2nd number: 1 9/72
20/24 - 81/72 is -7/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Subtract the two like fractions:
60/72 - 81/72 = 60 - 81/72 = -21/72 - After reducing the fraction, the answer is -7/24
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