Answers

Add 90/81 and 45/24

1^st number: 1 9/81, 2^nd number: 1 21/24

90/81 + 45/24 is 215/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 24 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 81 × 8 = 648,
   90/81 = 90 × 8/81 × 8 = 720/648
3. Likewise, for the 2nd fraction, since 24 × 27 = 648,
   45/24 = 45 × 27/24 × 27 = 1215/648
4. Add the two like fractions:
   720/648 + 1215/648 = 720 + 1215/648 = 1935/648
5. 1935/648 simplified gives 215/72
6. So, 90/81 + 45/24 = 215/72
   In mixed form: 271/72

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