Answers

Add 54/15 and 27/72

1^st number: 3 9/15, 2^nd number: 27/72

54/15 + 27/72 is 159/40.

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,
   54/15 = 54 × 24/15 × 24 = 1296/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   27/72 = 27 × 5/72 × 5 = 135/360
4. Add the two like fractions:
   1296/360 + 135/360 = 1296 + 135/360 = 1431/360
5. 1431/360 simplified gives 159/40
6. So, 54/15 + 27/72 = 159/40
   In mixed form: 339/40

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