Answers

Add 90/81 and 10/60

1^st number: 1 9/81, 2^nd number: 10/60

90/81 + 10/60 is 23/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 60 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 81 × 20 = 1620,
   90/81 = 90 × 20/81 × 20 = 1800/1620
3. Likewise, for the 2nd fraction, since 60 × 27 = 1620,
   10/60 = 10 × 27/60 × 27 = 270/1620
4. Add the two like fractions:
   1800/1620 + 270/1620 = 1800 + 270/1620 = 2070/1620
5. 2070/1620 simplified gives 23/18
6. So, 90/81 + 10/60 = 23/18
   In mixed form: 15/18

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