Subtract 20/18 from 15/9
1st number: 1 6/9, 2nd number: 1 2/18
15/9 - 20/18 is 5/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
15/9 = 15 × 2/9 × 2 = 30/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
20/18 = 20 × 1/18 × 1 = 20/18 - Subtract the two like fractions:
30/18 - 20/18 = 30 - 20/18 = 10/18 - After reducing the fraction, the answer is 5/9
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