Subtract 90/7 from 8/15
1st number: 8/15, 2nd number: 12 6/7
8/15 - 90/7 is -1294/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
8/15 = 8 × 7/15 × 7 = 56/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
90/7 = 90 × 15/7 × 15 = 1350/105 - Subtract the two like fractions:
56/105 - 1350/105 = 56 - 1350/105 = -1294/105
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