Add 21/9 and 35/30
1st number: 2 3/9, 2nd number: 1 5/30
21/9 + 35/30 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
35/30 = 35 × 3/30 × 3 = 105/90 - Add the two like fractions:
210/90 + 105/90 = 210 + 105/90 = 315/90 - 315/90 simplified gives 7/2
- So, 21/9 + 35/30 = 7/2
In mixed form: 31/2
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