Answers

Add 54/81 and 40/25

1^st number: 54/81, 2^nd number: 1 15/25

54/81 + 40/25 is 34/15.

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,
   54/81 = 54 × 25/81 × 25 = 1350/2025
3. Likewise, for the 2nd fraction, since 25 × 81 = 2025,
   40/25 = 40 × 81/25 × 81 = 3240/2025
4. Add the two like fractions:
   1350/2025 + 3240/2025 = 1350 + 3240/2025 = 4590/2025
5. 4590/2025 simplified gives 34/15
6. So, 54/81 + 40/25 = 34/15
   In mixed form: 24/15

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