Add 1/15 and 42/81
1/15 + 42/81 is 79/135.
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,
1/15 = 1 × 27/15 × 27 = 27/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
42/81 = 42 × 5/81 × 5 = 210/405 - Add the two like fractions:
27/405 + 210/405 = 27 + 210/405 = 237/405 - 237/405 simplified gives 79/135
- So, 1/15 + 42/81 = 79/135
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