Add 12/81 and 42/9
1st number: 12/81, 2nd number: 4 6/9
12/81 + 42/9 is 130/27.
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,
12/81 = 12 × 1/81 × 1 = 12/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
42/9 = 42 × 9/9 × 9 = 378/81 - Add the two like fractions:
12/81 + 378/81 = 12 + 378/81 = 390/81 - 390/81 simplified gives 130/27
- So, 12/81 + 42/9 = 130/27
In mixed form: 422/27
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