Answers

Add 72/63 and 5/15

1^st number: 1 9/63, 2^nd number: 5/15

72/63 + 5/15 is 31/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 15 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   72/63 = 72 × 5/63 × 5 = 360/315
3. Likewise, for the 2nd fraction, since 15 × 21 = 315,
   5/15 = 5 × 21/15 × 21 = 105/315
4. Add the two like fractions:
   360/315 + 105/315 = 360 + 105/315 = 465/315
5. 465/315 simplified gives 31/21
6. So, 72/63 + 5/15 = 31/21
   In mixed form: 110/21

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