Add 81/9 and 21/84
1st number: 9 0/9, 2nd number: 21/84
81/9 + 21/84 is 37/4.
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,
81/9 = 81 × 28/9 × 28 = 2268/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252 - Add the two like fractions:
2268/252 + 63/252 = 2268 + 63/252 = 2331/252 - 2331/252 simplified gives 37/4
- So, 81/9 + 21/84 = 37/4
In mixed form: 91/4
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