Answers

Add 72/63 and 5/20

1^st number: 1 9/63, 2^nd number: 5/20

72/63 + 5/20 is 39/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 20 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 63 × 20 = 1260,
   72/63 = 72 × 20/63 × 20 = 1440/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   5/20 = 5 × 63/20 × 63 = 315/1260
4. Add the two like fractions:
   1440/1260 + 315/1260 = 1440 + 315/1260 = 1755/1260
5. 1755/1260 simplified gives 39/28
6. So, 72/63 + 5/20 = 39/28
   In mixed form: 111/28

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