Add 18/15 and 7/81
1st number: 1 3/15, 2nd number: 7/81
18/15 + 7/81 is 521/405.
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,
18/15 = 18 × 27/15 × 27 = 486/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
7/81 = 7 × 5/81 × 5 = 35/405 - Add the two like fractions:
486/405 + 35/405 = 486 + 35/405 = 521/405 - So, 18/15 + 7/81 = 521/405
In mixed form: 1116/405
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