Add 10/15 and 30/81
10/15 + 30/81 is 28/27.
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,
10/15 = 10 × 27/15 × 27 = 270/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
30/81 = 30 × 5/81 × 5 = 150/405 - Add the two like fractions:
270/405 + 150/405 = 270 + 150/405 = 420/405 - 420/405 simplified gives 28/27
- So, 10/15 + 30/81 = 28/27
In mixed form: 11/27
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