Answers

Add 80/9 and 7/72

1^st number: 8 8/9, 2^nd number: 7/72

80/9 + 7/72 is 647/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 9 × 8 = 72,
   80/9 = 80 × 8/9 × 8 = 640/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   7/72 = 7 × 1/72 × 1 = 7/72
4. Add the two like fractions:
   640/72 + 7/72 = 640 + 7/72 = 647/72
5. So, 80/9 + 7/72 = 647/72
   In mixed form: 871/72

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