Add 18/15 and 42/81
1st number: 1 3/15, 2nd number: 42/81
18/15 + 42/81 is 232/135.
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,
42/81 = 42 × 5/81 × 5 = 210/405 - Add the two like fractions:
486/405 + 210/405 = 486 + 210/405 = 696/405 - 696/405 simplified gives 232/135
- So, 18/15 + 42/81 = 232/135
In mixed form: 197/135
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