Answers

Add 15/4 and 54/72

1^st number: 3 3/4, 2^nd number: 54/72

15/4 + 54/72 is 9/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 4 × 18 = 72,
   15/4 = 15 × 18/4 × 18 = 270/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   54/72 = 54 × 1/72 × 1 = 54/72
4. Add the two like fractions:
   270/72 + 54/72 = 270 + 54/72 = 324/72
5. 324/72 simplified gives 9/2
6. So, 15/4 + 54/72 = 9/2
   In mixed form: 41/2

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