Answers

Add 7/75 and 90/81

1^st number: 7/75, 2^nd number: 1 9/81

7/75 + 90/81 is 271/225.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 81 is 2025
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2025
2. For the 1st fraction, since 75 × 27 = 2025,
   7/75 = 7 × 27/75 × 27 = 189/2025
3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
   90/81 = 90 × 25/81 × 25 = 2250/2025
4. Add the two like fractions:
   189/2025 + 2250/2025 = 189 + 2250/2025 = 2439/2025
5. 2439/2025 simplified gives 271/225
6. So, 7/75 + 90/81 = 271/225
   In mixed form: 146/225

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