Add 15/9 and 20/81
1st number: 1 6/9, 2nd number: 20/81
15/9 + 20/81 is 155/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
15/9 = 15 × 9/9 × 9 = 135/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
20/81 = 20 × 1/81 × 1 = 20/81 - Add the two like fractions:
135/81 + 20/81 = 135 + 20/81 = 155/81 - So, 15/9 + 20/81 = 155/81
In mixed form: 174/81
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