Subtract 81/28 from 7/12
1st number: 7/12, 2nd number: 2 25/28
7/12 - 81/28 is -97/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
81/28 = 81 × 3/28 × 3 = 243/84 - Subtract the two like fractions:
49/84 - 243/84 = 49 - 243/84 = -194/84 - After reducing the fraction, the answer is -97/42
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