Add 21/6 and 18/9
1st number: 3 3/6, 2nd number: 2 0/9
21/6 + 18/9 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
21/6 = 21 × 3/6 × 3 = 63/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
18/9 = 18 × 2/9 × 2 = 36/18 - Add the two like fractions:
63/18 + 36/18 = 63 + 36/18 = 99/18 - 99/18 simplified gives 11/2
- So, 21/6 + 18/9 = 11/2
In mixed form: 51/2
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