Answers

Add 3/60 and 16/81

3/60 + 16/81 is 401/1620.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 81 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 60 × 27 = 1620,
   3/60 = 3 × 27/60 × 27 = 81/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   16/81 = 16 × 20/81 × 20 = 320/1620
4. Add the two like fractions:
   81/1620 + 320/1620 = 81 + 320/1620 = 401/1620
5. So, 3/60 + 16/81 = 401/1620

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