Answers

Add 80/63 and 25/20

1^st number: 1 17/63, 2^nd number: 1 5/20

80/63 + 25/20 is 635/252.

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,
   25/20 = 25 × 63/20 × 63 = 1575/1260
4. Add the two like fractions:
   1600/1260 + 1575/1260 = 1600 + 1575/1260 = 3175/1260
5. 3175/1260 simplified gives 635/252
6. So, 80/63 + 25/20 = 635/252
   In mixed form: 2131/252

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