Answers

Subtract 28/10 from 25/98

1^st number: 25/98, 2^nd number: 2 8/10

25/98 - 28/10 is -1247/490.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 10 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 98 × 5 = 490,
   25/98 = 25 × 5/98 × 5 = 125/490
3. Likewise, for the 2nd fraction, since 10 × 49 = 490,
   28/10 = 28 × 49/10 × 49 = 1372/490
4. Subtract the two like fractions:
   125/490 - 1372/490 = 125 - 1372/490 = -1247/490

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