Answers

Add 9/25 and 45/80

9/25 + 45/80 is 369/400.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 25 × 16 = 400,
   9/25 = 9 × 16/25 × 16 = 144/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   45/80 = 45 × 5/80 × 5 = 225/400
4. Add the two like fractions:
   144/400 + 225/400 = 144 + 225/400 = 369/400
5. So, 9/25 + 45/80 = 369/400

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