Answers

Add 15/98 and 54/80

15/98 + 54/80 is 1623/1960.

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,
   15/98 = 15 × 40/98 × 40 = 600/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   54/80 = 54 × 49/80 × 49 = 2646/3920
4. Add the two like fractions:
   600/3920 + 2646/3920 = 600 + 2646/3920 = 3246/3920
5. 3246/3920 simplified gives 1623/1960
6. So, 15/98 + 54/80 = 1623/1960

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