Answers

Add 18/98 and 9/80

18/98 + 9/80 is 1161/3920.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 80 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 98 × 40 = 3920,
   18/98 = 18 × 40/98 × 40 = 720/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   9/80 = 9 × 49/80 × 49 = 441/3920
4. Add the two like fractions:
   720/3920 + 441/3920 = 720 + 441/3920 = 1161/3920
5. So, 18/98 + 9/80 = 1161/3920

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