Answers

Add 4/45 and 25/80

4/45 + 25/80 is 289/720.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   4/45 = 4 × 16/45 × 16 = 64/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   25/80 = 25 × 9/80 × 9 = 225/720
4. Add the two like fractions:
   64/720 + 225/720 = 64 + 225/720 = 289/720
5. So, 4/45 + 25/80 = 289/720

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