Answers

Add 42/84 and 81/18

1^st number: 42/84, 2^nd number: 4 9/18

42/84 + 81/18 is 5/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 18 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   42/84 = 42 × 3/84 × 3 = 126/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   81/18 = 81 × 14/18 × 14 = 1134/252
4. Add the two like fractions:
   126/252 + 1134/252 = 126 + 1134/252 = 1260/252
5. 1260/252 simplified gives 5/1
6. So, 42/84 + 81/18 = 5/1

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