Answers

Add 84/98 and 70/80

84/98 + 70/80 is 97/56.

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,
   84/98 = 84 × 40/98 × 40 = 3360/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   70/80 = 70 × 49/80 × 49 = 3430/3920
4. Add the two like fractions:
   3360/3920 + 3430/3920 = 3360 + 3430/3920 = 6790/3920
5. 6790/3920 simplified gives 97/56
6. So, 84/98 + 70/80 = 97/56
   In mixed form: 141/56

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