Subtract 81/28 from 8/15
1st number: 8/15, 2nd number: 2 25/28
8/15 - 81/28 is -991/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
8/15 = 8 × 28/15 × 28 = 224/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
81/28 = 81 × 15/28 × 15 = 1215/420 - Subtract the two like fractions:
224/420 - 1215/420 = 224 - 1215/420 = -991/420
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