Answers

Add 7/2 and 40/81

1^st number: 3 1/2, 2^nd number: 40/81

7/2 + 40/81 is 647/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 2 × 81 = 162,
   7/2 = 7 × 81/2 × 81 = 567/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   40/81 = 40 × 2/81 × 2 = 80/162
4. Add the two like fractions:
   567/162 + 80/162 = 567 + 80/162 = 647/162
5. So, 7/2 + 40/81 = 647/162
   In mixed form: 3161/162

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