Add 28/15 and 1/81
1st number: 1 13/15, 2nd number: 1/81
28/15 + 1/81 is 761/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
28/15 = 28 × 27/15 × 27 = 756/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
1/81 = 1 × 5/81 × 5 = 5/405 - Add the two like fractions:
756/405 + 5/405 = 756 + 5/405 = 761/405 - So, 28/15 + 1/81 = 761/405
In mixed form: 1356/405
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