Answers

Add 24/81 and 45/80

24/81 + 45/80 is 371/432.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 80 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 81 × 80 = 6480,
   24/81 = 24 × 80/81 × 80 = 1920/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   45/80 = 45 × 81/80 × 81 = 3645/6480
4. Add the two like fractions:
   1920/6480 + 3645/6480 = 1920 + 3645/6480 = 5565/6480
5. 5565/6480 simplified gives 371/432
6. So, 24/81 + 45/80 = 371/432

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