Answers

Subtract 21/98 from 25/36

25/36 - 21/98 is 121/252.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 98 is 1764
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1764
2. For the 1st fraction, since 36 × 49 = 1764,
   25/36 = 25 × 49/36 × 49 = 1225/1764
3. Likewise, for the 2nd fraction, since 98 × 18 = 1764,
   21/98 = 21 × 18/98 × 18 = 378/1764
4. Subtract the two like fractions:
   1225/1764 - 378/1764 = 1225 - 378/1764 = 847/1764
5. After reducing the fraction, the answer is 121/252

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