Add 15/30 and 21/9
1st number: 15/30, 2nd number: 2 3/9
15/30 + 21/9 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
45/90 + 210/90 = 45 + 210/90 = 255/90 - 255/90 simplified gives 17/6
- So, 15/30 + 21/9 = 17/6
In mixed form: 25/6
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