Add 27/4 and 21/9
1st number: 6 3/4, 2nd number: 2 3/9
27/4 + 21/9 is 109/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
27/4 = 27 × 9/4 × 9 = 243/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Add the two like fractions:
243/36 + 84/36 = 243 + 84/36 = 327/36 - 327/36 simplified gives 109/12
- So, 27/4 + 21/9 = 109/12
In mixed form: 91/12
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