Answers

Add 80/63 and 36/20

1^st number: 1 17/63, 2^nd number: 1 16/20

80/63 + 36/20 is 967/315.

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,
   80/63 = 80 × 20/63 × 20 = 1600/1260
3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
   36/20 = 36 × 63/20 × 63 = 2268/1260
4. Add the two like fractions:
   1600/1260 + 2268/1260 = 1600 + 2268/1260 = 3868/1260
5. 3868/1260 simplified gives 967/315
6. So, 80/63 + 36/20 = 967/315
   In mixed form: 322/315

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