Subtract 18/5 from 15/9
1st number: 1 6/9, 2nd number: 3 3/5
15/9 - 18/5 is -29/15.
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,
15/9 = 15 × 5/9 × 5 = 75/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
18/5 = 18 × 9/5 × 9 = 162/45 - Subtract the two like fractions:
75/45 - 162/45 = 75 - 162/45 = -87/45 - After reducing the fraction, the answer is -29/15
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