Subtract 5/10 from 9/20
9/20 - 5/10 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
5/10 = 5 × 2/10 × 2 = 10/20 - Subtract the two like fractions:
9/20 - 10/20 = 9 - 10/20 = -1/20
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