Answers

Add 72/42 and 27/18

1^st number: 1 30/42, 2^nd number: 1 9/18

72/42 + 27/18 is 45/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   72/42 = 72 × 3/42 × 3 = 216/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   27/18 = 27 × 7/18 × 7 = 189/126
4. Add the two like fractions:
   216/126 + 189/126 = 216 + 189/126 = 405/126
5. 405/126 simplified gives 45/14
6. So, 72/42 + 27/18 = 45/14
   In mixed form: 33/14

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