Answers

Add 72/20 and 63/4

1^st number: 3 12/20, 2^nd number: 15 3/4

72/20 + 63/4 is 387/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 4 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   72/20 = 72 × 1/20 × 1 = 72/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   63/4 = 63 × 5/4 × 5 = 315/20
4. Add the two like fractions:
   72/20 + 315/20 = 72 + 315/20 = 387/20
5. So, 72/20 + 63/4 = 387/20
   In mixed form: 197/20

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