Add 21/9 and 84/16
1st number: 2 3/9, 2nd number: 5 4/16
21/9 + 84/16 is 91/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
21/9 = 21 × 16/9 × 16 = 336/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
84/16 = 84 × 9/16 × 9 = 756/144 - Add the two like fractions:
336/144 + 756/144 = 336 + 756/144 = 1092/144 - 1092/144 simplified gives 91/12
- So, 21/9 + 84/16 = 91/12
In mixed form: 77/12
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