Answers

Subtract 18/98 from 90/80

1^st number: 1 10/80, 2^nd number: 18/98

90/80 - 18/98 is 369/392.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 98 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 80 × 49 = 3920,
   90/80 = 90 × 49/80 × 49 = 4410/3920
3. Likewise, for the 2nd fraction, since 98 × 40 = 3920,
   18/98 = 18 × 40/98 × 40 = 720/3920
4. Subtract the two like fractions:
   4410/3920 - 720/3920 = 4410 - 720/3920 = 3690/3920
5. After reducing the fraction, the answer is 369/392

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