Answers

Subtract 4/98 from 81/10

1^st number: 8 1/10, 2^nd number: 4/98

81/10 - 4/98 is 3949/490.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 98 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 10 × 49 = 490,
   81/10 = 81 × 49/10 × 49 = 3969/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   4/98 = 4 × 5/98 × 5 = 20/490
4. Subtract the two like fractions:
   3969/490 - 20/490 = 3969 - 20/490 = 3949/490
5. In mixed form: 829/490

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