Subtract 90/8 from 80/15
1st number: 5 5/15, 2nd number: 11 2/8
80/15 - 90/8 is -71/12.
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,
80/15 = 80 × 8/15 × 8 = 640/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
90/8 = 90 × 15/8 × 15 = 1350/120 - Subtract the two like fractions:
640/120 - 1350/120 = 640 - 1350/120 = -710/120 - After reducing the fraction, the answer is -71/12
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