Add 18/81 and 20/15
1st number: 18/81, 2nd number: 1 5/15
18/81 + 20/15 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 15 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405 - Likewise, for the 2nd fraction, since 15 × 27 = 405,
20/15 = 20 × 27/15 × 27 = 540/405 - Add the two like fractions:
90/405 + 540/405 = 90 + 540/405 = 630/405 - 630/405 simplified gives 14/9
- So, 18/81 + 20/15 = 14/9
In mixed form: 15/9
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