Add 21/9 and 18/12
1st number: 2 3/9, 2nd number: 1 6/12
21/9 + 18/12 is 23/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
18/12 = 18 × 3/12 × 3 = 54/36 - Add the two like fractions:
84/36 + 54/36 = 84 + 54/36 = 138/36 - 138/36 simplified gives 23/6
- So, 21/9 + 18/12 = 23/6
In mixed form: 35/6
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