Subtract 18/8 from 15/40
1st number: 15/40, 2nd number: 2 2/8
15/40 - 18/8 is -15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Subtract the two like fractions:
15/40 - 90/40 = 15 - 90/40 = -75/40 - After reducing the fraction, the answer is -15/8
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