Answers

Add 45/8 and 81/80

1^st number: 5 5/8, 2^nd number: 1 1/80

45/8 + 81/80 is 531/80.

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,
   45/8 = 45 × 10/8 × 10 = 450/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   81/80 = 81 × 1/80 × 1 = 81/80
4. Add the two like fractions:
   450/80 + 81/80 = 450 + 81/80 = 531/80
5. So, 45/8 + 81/80 = 531/80
   In mixed form: 651/80

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