Answers

Add 72/18 and 60/12

1^st number: 4 0/18, 2^nd number: 5 0/12

72/18 + 60/12 is 9/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 12 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 18 × 2 = 36,
   72/18 = 72 × 2/18 × 2 = 144/36
3. Likewise, for the 2nd fraction, since 12 × 3 = 36,
   60/12 = 60 × 3/12 × 3 = 180/36
4. Add the two like fractions:
   144/36 + 180/36 = 144 + 180/36 = 324/36
5. 324/36 simplified gives 9/1
6. So, 72/18 + 60/12 = 9/1

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