Answers

Subtract 7/81 from 25/84

25/84 - 7/81 is 479/2268.

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,
   25/84 = 25 × 27/84 × 27 = 675/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   7/81 = 7 × 28/81 × 28 = 196/2268
4. Subtract the two like fractions:
   675/2268 - 196/2268 = 675 - 196/2268 = 479/2268

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