Answers

Subtract 5/81 from 20/25

20/25 - 5/81 is 299/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 81 is 2025
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2025
2. For the 1st fraction, since 25 × 81 = 2025,
   20/25 = 20 × 81/25 × 81 = 1620/2025
3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
   5/81 = 5 × 25/81 × 25 = 125/2025
4. Subtract the two like fractions:
   1620/2025 - 125/2025 = 1620 - 125/2025 = 1495/2025
5. After reducing the fraction, the answer is 299/405

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