Answers

Add 81/50 and 98/20

1^st number: 1 31/50, 2^nd number: 4 18/20

81/50 + 98/20 is 163/25.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 20 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 50 × 2 = 100,
   81/50 = 81 × 2/50 × 2 = 162/100
3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
   98/20 = 98 × 5/20 × 5 = 490/100
4. Add the two like fractions:
   162/100 + 490/100 = 162 + 490/100 = 652/100
5. 652/100 simplified gives 163/25
6. So, 81/50 + 98/20 = 163/25
   In mixed form: 613/25

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