Add 42/81 and 21/9
1st number: 42/81, 2nd number: 2 3/9
42/81 + 21/9 is 77/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
42/81 = 42 × 1/81 × 1 = 42/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
21/9 = 21 × 9/9 × 9 = 189/81 - Add the two like fractions:
42/81 + 189/81 = 42 + 189/81 = 231/81 - 231/81 simplified gives 77/27
- So, 42/81 + 21/9 = 77/27
In mixed form: 223/27
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