Answers

Add 7/4 and 28/81

1^st number: 1 3/4, 2^nd number: 28/81

7/4 + 28/81 is 679/324.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 4 × 81 = 324,
   7/4 = 7 × 81/4 × 81 = 567/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   28/81 = 28 × 4/81 × 4 = 112/324
4. Add the two like fractions:
   567/324 + 112/324 = 567 + 112/324 = 679/324
5. So, 7/4 + 28/81 = 679/324
   In mixed form: 231/324

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