Answers

Add 45/9 and 60/80

1^st number: 5 0/9, 2^nd number: 60/80

45/9 + 60/80 is 23/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 9 × 80 = 720,
   45/9 = 45 × 80/9 × 80 = 3600/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   60/80 = 60 × 9/80 × 9 = 540/720
4. Add the two like fractions:
   3600/720 + 540/720 = 3600 + 540/720 = 4140/720
5. 4140/720 simplified gives 23/4
6. So, 45/9 + 60/80 = 23/4
   In mixed form: 53/4

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