Answers

Add 10/8 and 9/80

1^st number: 1 2/8, 2^nd number: 9/80

10/8 + 9/80 is 109/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 8 × 10 = 80,
   10/8 = 10 × 10/8 × 10 = 100/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   9/80 = 9 × 1/80 × 1 = 9/80
4. Add the two like fractions:
   100/80 + 9/80 = 100 + 9/80 = 109/80
5. So, 10/8 + 9/80 = 109/80
   In mixed form: 129/80

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