Answers

Add 15/4 and 63/81

1^st number: 3 3/4, 2^nd number: 63/81

15/4 + 63/81 is 163/36.

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,
   15/4 = 15 × 81/4 × 81 = 1215/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   63/81 = 63 × 4/81 × 4 = 252/324
4. Add the two like fractions:
   1215/324 + 252/324 = 1215 + 252/324 = 1467/324
5. 1467/324 simplified gives 163/36
6. So, 15/4 + 63/81 = 163/36
   In mixed form: 419/36

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