Answers

Add 90/81 and 4/25

1^st number: 1 9/81, 2^nd number: 4/25

90/81 + 4/25 is 286/225.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 25 is 2025
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2025
2. For the 1st fraction, since 81 × 25 = 2025,
   90/81 = 90 × 25/81 × 25 = 2250/2025
3. Likewise, for the 2nd fraction, since 25 × 81 = 2025,
   4/25 = 4 × 81/25 × 81 = 324/2025
4. Add the two like fractions:
   2250/2025 + 324/2025 = 2250 + 324/2025 = 2574/2025
5. 2574/2025 simplified gives 286/225
6. So, 90/81 + 4/25 = 286/225
   In mixed form: 161/225

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