Answers

Subtract 63/98 from 25/42

25/42 - 63/98 is -1/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 98 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 42 × 7 = 294,
   25/42 = 25 × 7/42 × 7 = 175/294
3. Likewise, for the 2nd fraction, since 98 × 3 = 294,
   63/98 = 63 × 3/98 × 3 = 189/294
4. Subtract the two like fractions:
   175/294 - 189/294 = 175 - 189/294 = -14/294
5. After reducing the fraction, the answer is -1/21

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