Answers

Add 98/81 and 20/40

1^st number: 1 17/81, 2^nd number: 20/40

98/81 + 20/40 is 277/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   98/81 = 98 × 40/81 × 40 = 3920/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   20/40 = 20 × 81/40 × 81 = 1620/3240
4. Add the two like fractions:
   3920/3240 + 1620/3240 = 3920 + 1620/3240 = 5540/3240
5. 5540/3240 simplified gives 277/162
6. So, 98/81 + 20/40 = 277/162
   In mixed form: 1115/162

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