Subtract 9/20 from 1/15
1/15 - 9/20 is -23/60.
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,
1/15 = 1 × 4/15 × 4 = 4/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Subtract the two like fractions:
4/60 - 27/60 = 4 - 27/60 = -23/60
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