Answers

Add 72/63 and 15/42

1^st number: 1 9/63, 2^nd number: 15/42

72/63 + 15/42 is 3/2.

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,
   72/63 = 72 × 2/63 × 2 = 144/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   15/42 = 15 × 3/42 × 3 = 45/126
4. Add the two like fractions:
   144/126 + 45/126 = 144 + 45/126 = 189/126
5. 189/126 simplified gives 3/2
6. So, 72/63 + 15/42 = 3/2
   In mixed form: 11/2

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