Subtract 20/15 from 10/8
1st number: 1 2/8, 2nd number: 1 5/15
10/8 - 20/15 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
10/8 = 10 × 15/8 × 15 = 150/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
20/15 = 20 × 8/15 × 8 = 160/120 - Subtract the two like fractions:
150/120 - 160/120 = 150 - 160/120 = -10/120 - After reducing the fraction, the answer is -1/12
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