Answers

Add 72/49 and 70/20

1^st number: 1 23/49, 2^nd number: 3 10/20

72/49 + 70/20 is 487/98.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 20 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 49 × 20 = 980,
   72/49 = 72 × 20/49 × 20 = 1440/980
3. Likewise, for the 2nd fraction, since 20 × 49 = 980,
   70/20 = 70 × 49/20 × 49 = 3430/980
4. Add the two like fractions:
   1440/980 + 3430/980 = 1440 + 3430/980 = 4870/980
5. 4870/980 simplified gives 487/98
6. So, 72/49 + 70/20 = 487/98
   In mixed form: 495/98

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