Subtract 12/9 from 81/28
1st number: 2 25/28, 2nd number: 1 3/9
81/28 - 12/9 is 131/84.
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,
12/9 = 12 × 28/9 × 28 = 336/252 - Subtract the two like fractions:
729/252 - 336/252 = 729 - 336/252 = 393/252 - After reducing the fraction, the answer is 131/84
- In mixed form: 147/84
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