Answers

Subtract 45/81 from 15/75

15/75 - 45/81 is -16/45.

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,
   15/75 = 15 × 27/75 × 27 = 405/2025
3. Likewise, for the 2nd fraction, since 81 × 25 = 2025,
   45/81 = 45 × 25/81 × 25 = 1125/2025
4. Subtract the two like fractions:
   405/2025 - 1125/2025 = 405 - 1125/2025 = -720/2025
5. After reducing the fraction, the answer is -16/45

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