Answers

Add 72/42 and 12/54

1^st number: 1 30/42, 2^nd number: 12/54

72/42 + 12/54 is 122/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   72/42 = 72 × 9/42 × 9 = 648/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   12/54 = 12 × 7/54 × 7 = 84/378
4. Add the two like fractions:
   648/378 + 84/378 = 648 + 84/378 = 732/378
5. 732/378 simplified gives 122/63
6. So, 72/42 + 12/54 = 122/63
   In mixed form: 159/63

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