Subtract 15/9 from 21/5
1st number: 4 1/5, 2nd number: 1 6/9
21/5 - 15/9 is 38/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
21/5 = 21 × 9/5 × 9 = 189/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
15/9 = 15 × 5/9 × 5 = 75/45 - Subtract the two like fractions:
189/45 - 75/45 = 189 - 75/45 = 114/45 - After reducing the fraction, the answer is 38/15
- In mixed form: 28/15
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