Answers

Add 81/18 and 90/81

1^st number: 4 9/18, 2^nd number: 1 9/81

81/18 + 90/81 is 101/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 18 × 9 = 162,
   81/18 = 81 × 9/18 × 9 = 729/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   90/81 = 90 × 2/81 × 2 = 180/162
4. Add the two like fractions:
   729/162 + 180/162 = 729 + 180/162 = 909/162
5. 909/162 simplified gives 101/18
6. So, 81/18 + 90/81 = 101/18
   In mixed form: 511/18

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