Answers

Add 7/75 and 18/81

7/75 + 18/81 is 71/225.

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,
   18/81 = 18 × 25/81 × 25 = 450/2025
4. Add the two like fractions:
   189/2025 + 450/2025 = 189 + 450/2025 = 639/2025
5. 639/2025 simplified gives 71/225
6. So, 7/75 + 18/81 = 71/225

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