Answers

Add 12/98 and 84/80

1^st number: 12/98, 2^nd number: 1 4/80

12/98 + 84/80 is 1149/980.

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,
   12/98 = 12 × 40/98 × 40 = 480/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   84/80 = 84 × 49/80 × 49 = 4116/3920
4. Add the two like fractions:
   480/3920 + 4116/3920 = 480 + 4116/3920 = 4596/3920
5. 4596/3920 simplified gives 1149/980
6. So, 12/98 + 84/80 = 1149/980
   In mixed form: 1169/980

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