Answers

Add 81/60 and 42/81

1^st number: 1 21/60, 2^nd number: 42/81

81/60 + 42/81 is 1009/540.

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,
   81/60 = 81 × 27/60 × 27 = 2187/1620
3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
   42/81 = 42 × 20/81 × 20 = 840/1620
4. Add the two like fractions:
   2187/1620 + 840/1620 = 2187 + 840/1620 = 3027/1620
5. 3027/1620 simplified gives 1009/540
6. So, 81/60 + 42/81 = 1009/540
   In mixed form: 1469/540

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