Answers

Add 54/63 and 54/42

1^st number: 54/63, 2^nd number: 1 12/42

54/63 + 54/42 is 15/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   54/63 = 54 × 2/63 × 2 = 108/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   54/42 = 54 × 3/42 × 3 = 162/126
4. Add the two like fractions:
   108/126 + 162/126 = 108 + 162/126 = 270/126
5. 270/126 simplified gives 15/7
6. So, 54/63 + 54/42 = 15/7
   In mixed form: 21/7

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