Answers

Add 72/98 and 84/20

1^st number: 72/98, 2^nd number: 4 4/20

72/98 + 84/20 is 1209/245.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 98 × 10 = 980,
   72/98 = 72 × 10/98 × 10 = 720/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   84/20 = 84 × 49/20 × 49 = 4116/980
4. Add the two like fractions:
   720/980 + 4116/980 = 720 + 4116/980 = 4836/980
5. 4836/980 simplified gives 1209/245
6. So, 72/98 + 84/20 = 1209/245
   In mixed form: 4229/245

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