Add 21/9 and 81/84
1st number: 2 3/9, 2nd number: 81/84
21/9 + 81/84 is 277/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
81/84 = 81 × 3/84 × 3 = 243/252 - Add the two like fractions:
588/252 + 243/252 = 588 + 243/252 = 831/252 - 831/252 simplified gives 277/84
- So, 21/9 + 81/84 = 277/84
In mixed form: 325/84
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