Answers

Add 64/9 and 49/80

1^st number: 7 1/9, 2^nd number: 49/80

64/9 + 49/80 is 5561/720.

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,
   64/9 = 64 × 80/9 × 80 = 5120/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   49/80 = 49 × 9/80 × 9 = 441/720
4. Add the two like fractions:
   5120/720 + 441/720 = 5120 + 441/720 = 5561/720
5. So, 64/9 + 49/80 = 5561/720
   In mixed form: 7521/720

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