Subtract 15/25 from 9/20
9/20 - 15/25 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
9/20 = 9 × 5/20 × 5 = 45/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
15/25 = 15 × 4/25 × 4 = 60/100 - Subtract the two like fractions:
45/100 - 60/100 = 45 - 60/100 = -15/100 - After reducing the fraction, the answer is -3/20
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