Answers

Add 98/81 and 4/72

1^st number: 1 17/81, 2^nd number: 4/72

98/81 + 4/72 is 205/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 72 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 81 × 8 = 648,
   98/81 = 98 × 8/81 × 8 = 784/648
3. Likewise, for the 2nd fraction, since 72 × 9 = 648,
   4/72 = 4 × 9/72 × 9 = 36/648
4. Add the two like fractions:
   784/648 + 36/648 = 784 + 36/648 = 820/648
5. 820/648 simplified gives 205/162
6. So, 98/81 + 4/72 = 205/162
   In mixed form: 143/162

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