Answers

Add 81/18 and 54/42

1^st number: 4 9/18, 2^nd number: 1 12/42

81/18 + 54/42 is 81/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   81/18 = 81 × 7/18 × 7 = 567/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   54/42 = 54 × 3/42 × 3 = 162/126
4. Add the two like fractions:
   567/126 + 162/126 = 567 + 162/126 = 729/126
5. 729/126 simplified gives 81/14
6. So, 81/18 + 54/42 = 81/14
   In mixed form: 511/14

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