Answers

Subtract 80/98 from 21/10

1^st number: 2 1/10, 2^nd number: 80/98

21/10 - 80/98 is 629/490.

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,
   21/10 = 21 × 49/10 × 49 = 1029/490
3. Likewise, for the 2nd fraction, since 98 × 5 = 490,
   80/98 = 80 × 5/98 × 5 = 400/490
4. Subtract the two like fractions:
   1029/490 - 400/490 = 1029 - 400/490 = 629/490
5. In mixed form: 1139/490

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