Answers

Add 63/35 and 84/80

1^st number: 1 28/35, 2^nd number: 1 4/80

63/35 + 84/80 is 57/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 35 × 16 = 560,
   63/35 = 63 × 16/35 × 16 = 1008/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   84/80 = 84 × 7/80 × 7 = 588/560
4. Add the two like fractions:
   1008/560 + 588/560 = 1008 + 588/560 = 1596/560
5. 1596/560 simplified gives 57/20
6. So, 63/35 + 84/80 = 57/20
   In mixed form: 217/20

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