Add 21/9 and 84/81
1st number: 2 3/9, 2nd number: 1 3/81
21/9 + 84/81 is 91/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
21/9 = 21 × 9/9 × 9 = 189/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
84/81 = 84 × 1/81 × 1 = 84/81 - Add the two like fractions:
189/81 + 84/81 = 189 + 84/81 = 273/81 - 273/81 simplified gives 91/27
- So, 21/9 + 84/81 = 91/27
In mixed form: 310/27
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