Answers

Subtract 80/70 from 81/98

1^st number: 81/98, 2^nd number: 1 10/70

81/98 - 80/70 is -31/98.

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,
   81/98 = 81 × 5/98 × 5 = 405/490
3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
   80/70 = 80 × 7/70 × 7 = 560/490
4. Subtract the two like fractions:
   405/490 - 560/490 = 405 - 560/490 = -155/490
5. After reducing the fraction, the answer is -31/98

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