Answers

Add 54/21 and 5/42

1^st number: 2 12/21, 2^nd number: 5/42

54/21 + 5/42 is 113/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   54/21 = 54 × 2/21 × 2 = 108/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   5/42 = 5 × 1/42 × 1 = 5/42
4. Add the two like fractions:
   108/42 + 5/42 = 108 + 5/42 = 113/42
5. So, 54/21 + 5/42 = 113/42
   In mixed form: 229/42

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