Add 21/6 and 28/18
1st number: 3 3/6, 2nd number: 1 10/18
21/6 + 28/18 is 91/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 18 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 18 × 1 = 18,
28/18 = 28 × 1/18 × 1 = 28/18 - Add the two like fractions:
63/18 + 28/18 = 63 + 28/18 = 91/18 - So, 21/6 + 28/18 = 91/18
In mixed form: 51/18
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