Answers

Add 72/15 and 54/72

1^st number: 4 12/15, 2^nd number: 54/72

72/15 + 54/72 is 111/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   72/15 = 72 × 24/15 × 24 = 1728/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   54/72 = 54 × 5/72 × 5 = 270/360
4. Add the two like fractions:
   1728/360 + 270/360 = 1728 + 270/360 = 1998/360
5. 1998/360 simplified gives 111/20
6. So, 72/15 + 54/72 = 111/20
   In mixed form: 511/20

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