Add 21/30 and 10/9
1st number: 21/30, 2nd number: 1 1/9
21/30 + 10/9 is 163/90.
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,
10/9 = 10 × 10/9 × 10 = 100/90 - Add the two like fractions:
63/90 + 100/90 = 63 + 100/90 = 163/90 - So, 21/30 + 10/9 = 163/90
In mixed form: 173/90
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