Answers

Subtract 81/70 from 12/98

1^st number: 12/98, 2^nd number: 1 11/70

12/98 - 81/70 is -507/490.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 70 is 490
   
   Next, find the equivalent fraction of both fractional numbers with denominator 490
2. For the 1st fraction, since 98 × 5 = 490,
   12/98 = 12 × 5/98 × 5 = 60/490
3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
   81/70 = 81 × 7/70 × 7 = 567/490
4. Subtract the two like fractions:
   60/490 - 567/490 = 60 - 567/490 = -507/490

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