Answers

Add 8/90 and 45/80

8/90 + 45/80 is 469/720.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   8/90 = 8 × 8/90 × 8 = 64/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   45/80 = 45 × 9/80 × 9 = 405/720
4. Add the two like fractions:
   64/720 + 405/720 = 64 + 405/720 = 469/720
5. So, 8/90 + 45/80 = 469/720

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