Add 18/9 and 3/15
1st number: 2 0/9, 2nd number: 3/15
18/9 + 3/15 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
18/9 = 18 × 5/9 × 5 = 90/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
3/15 = 3 × 3/15 × 3 = 9/45 - Add the two like fractions:
90/45 + 9/45 = 90 + 9/45 = 99/45 - 99/45 simplified gives 11/5
- So, 18/9 + 3/15 = 11/5
In mixed form: 21/5
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