Add 21/9 and 9/4
1st number: 2 3/9, 2nd number: 2 1/4
21/9 + 9/4 is 55/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
9/4 = 9 × 9/4 × 9 = 81/36 - Add the two like fractions:
84/36 + 81/36 = 84 + 81/36 = 165/36 - 165/36 simplified gives 55/12
- So, 21/9 + 9/4 = 55/12
In mixed form: 47/12
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