Add 5/81 and 4/5
5/81 + 4/5 is 349/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 5 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
5/81 = 5 × 5/81 × 5 = 25/405 - Likewise, for the 2nd fraction, since 5 × 81 = 405,
4/5 = 4 × 81/5 × 81 = 324/405 - Add the two like fractions:
25/405 + 324/405 = 25 + 324/405 = 349/405 - So, 5/81 + 4/5 = 349/405
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