Answers

Subtract 16/81 from 15/84

15/84 - 16/81 is -43/2268.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 84 × 27 = 2268,
   15/84 = 15 × 27/84 × 27 = 405/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   16/81 = 16 × 28/81 × 28 = 448/2268
4. Subtract the two like fractions:
   405/2268 - 448/2268 = 405 - 448/2268 = -43/2268

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