Add 21/81 and 7/6
1st number: 21/81, 2nd number: 1 1/6
21/81 + 7/6 is 77/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Likewise, for the 2nd fraction, since 6 × 27 = 162,
7/6 = 7 × 27/6 × 27 = 189/162 - Add the two like fractions:
42/162 + 189/162 = 42 + 189/162 = 231/162 - 231/162 simplified gives 77/54
- So, 21/81 + 7/6 = 77/54
In mixed form: 123/54
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