Answers

Add 63/18 and 63/80

1^st number: 3 9/18, 2^nd number: 63/80

63/18 + 63/80 is 343/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 18 × 40 = 720,
   63/18 = 63 × 40/18 × 40 = 2520/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   63/80 = 63 × 9/80 × 9 = 567/720
4. Add the two like fractions:
   2520/720 + 567/720 = 2520 + 567/720 = 3087/720
5. 3087/720 simplified gives 343/80
6. So, 63/18 + 63/80 = 343/80
   In mixed form: 423/80

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