Subtract 15/9 from 81/28
1st number: 2 25/28, 2nd number: 1 6/9
81/28 - 15/9 is 103/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
81/28 = 81 × 9/28 × 9 = 729/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
15/9 = 15 × 28/9 × 28 = 420/252 - Subtract the two like fractions:
729/252 - 420/252 = 729 - 420/252 = 309/252 - After reducing the fraction, the answer is 103/84
- In mixed form: 119/84
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