Answers

Add 81/42 and 27/18

1^st number: 1 39/42, 2^nd number: 1 9/18

81/42 + 27/18 is 24/7.

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,
   81/42 = 81 × 3/42 × 3 = 243/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   27/18 = 27 × 7/18 × 7 = 189/126
4. Add the two like fractions:
   243/126 + 189/126 = 243 + 189/126 = 432/126
5. 432/126 simplified gives 24/7
6. So, 81/42 + 27/18 = 24/7
   In mixed form: 33/7

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