Subtract 81/56 from 12/84
1st number: 12/84, 2nd number: 1 25/56
12/84 - 81/56 is -73/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
12/84 = 12 × 2/84 × 2 = 24/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
81/56 = 81 × 3/56 × 3 = 243/168 - Subtract the two like fractions:
24/168 - 243/168 = 24 - 243/168 = -219/168 - After reducing the fraction, the answer is -73/56
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