Subtract 81/8 from 8/15
1st number: 8/15, 2nd number: 10 1/8
8/15 - 81/8 is -1151/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
8/15 = 8 × 8/15 × 8 = 64/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
81/8 = 81 × 15/8 × 15 = 1215/120 - Subtract the two like fractions:
64/120 - 1215/120 = 64 - 1215/120 = -1151/120
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