Answers

Add 42/2 and 81/84

1^st number: 21 0/2, 2^nd number: 81/84

42/2 + 81/84 is 615/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 2 × 42 = 84,
   42/2 = 42 × 42/2 × 42 = 1764/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   81/84 = 81 × 1/84 × 1 = 81/84
4. Add the two like fractions:
   1764/84 + 81/84 = 1764 + 81/84 = 1845/84
5. 1845/84 simplified gives 615/28
6. So, 42/2 + 81/84 = 615/28
   In mixed form: 2127/28

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