Subtract 18/15 from 20/30
1st number: 20/30, 2nd number: 1 3/15
20/30 - 18/15 is -8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Subtract the two like fractions:
20/30 - 36/30 = 20 - 36/30 = -16/30 - After reducing the fraction, the answer is -8/15
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