Add 21/30 and 21/9
1st number: 21/30, 2nd number: 2 3/9
21/30 + 21/9 is 91/30.
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,
21/30 = 21 × 3/30 × 3 = 63/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
63/90 + 210/90 = 63 + 210/90 = 273/90 - 273/90 simplified gives 91/30
- So, 21/30 + 21/9 = 91/30
In mixed form: 31/30
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