Subtract 21/24 from 81/10
1st number: 8 1/10, 2nd number: 21/24
81/10 - 21/24 is 289/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 10 × 12 = 120,
81/10 = 81 × 12/10 × 12 = 972/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Subtract the two like fractions:
972/120 - 105/120 = 972 - 105/120 = 867/120 - After reducing the fraction, the answer is 289/40
- In mixed form: 79/40
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