Add 18/81 and 3/15
18/81 + 3/15 is 19/45.
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,
3/15 = 3 × 27/15 × 27 = 81/405 - Add the two like fractions:
90/405 + 81/405 = 90 + 81/405 = 171/405 - 171/405 simplified gives 19/45
- So, 18/81 + 3/15 = 19/45
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