Answers

Add 7/42 and 54/63

7/42 + 54/63 is 43/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   7/42 = 7 × 3/42 × 3 = 21/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   54/63 = 54 × 2/63 × 2 = 108/126
4. Add the two like fractions:
   21/126 + 108/126 = 21 + 108/126 = 129/126
5. 129/126 simplified gives 43/42
6. So, 7/42 + 54/63 = 43/42
   In mixed form: 11/42

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