Subtract 15/20 from 18/15
1st number: 1 3/15, 2nd number: 15/20
18/15 - 15/20 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
15/20 = 15 × 3/20 × 3 = 45/60 - Subtract the two like fractions:
72/60 - 45/60 = 72 - 45/60 = 27/60 - After reducing the fraction, the answer is 9/20
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