Subtract 15/5 from 20/9
1st number: 2 2/9, 2nd number: 3 0/5
20/9 - 15/5 is -7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
20/9 = 20 × 5/9 × 5 = 100/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
15/5 = 15 × 9/5 × 9 = 135/45 - Subtract the two like fractions:
100/45 - 135/45 = 100 - 135/45 = -35/45 - After reducing the fraction, the answer is -7/9
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