Answers

Add 42/75 and 90/81

1^st number: 42/75, 2^nd number: 1 9/81

42/75 + 90/81 is 376/225.

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,
   42/75 = 42 × 27/75 × 27 = 1134/2025
3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
   90/81 = 90 × 25/81 × 25 = 2250/2025
4. Add the two like fractions:
   1134/2025 + 2250/2025 = 1134 + 2250/2025 = 3384/2025
5. 3384/2025 simplified gives 376/225
6. So, 42/75 + 90/81 = 376/225
   In mixed form: 1151/225

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