Answers

Add 84/20 and 80/63

1^st number: 4 4/20, 2^nd number: 1 17/63

84/20 + 80/63 is 1723/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 63 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 20 × 63 = 1260,
   84/20 = 84 × 63/20 × 63 = 5292/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   80/63 = 80 × 20/63 × 20 = 1600/1260
4. Add the two like fractions:
   5292/1260 + 1600/1260 = 5292 + 1600/1260 = 6892/1260
5. 6892/1260 simplified gives 1723/315
6. So, 84/20 + 80/63 = 1723/315
   In mixed form: 5148/315

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