Answers

Subtract 9/81 from 30/75

30/75 - 9/81 is 13/45.

Steps for subtracting 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,
   30/75 = 30 × 27/75 × 27 = 810/2025
3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
   9/81 = 9 × 25/81 × 25 = 225/2025
4. Subtract the two like fractions:
   810/2025 - 225/2025 = 810 - 225/2025 = 585/2025
5. After reducing the fraction, the answer is 13/45

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