Answers

Add 16/25 and 80/72

1^st number: 16/25, 2^nd number: 1 8/72

16/25 + 80/72 is 394/225.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 25 × 72 = 1800,
   16/25 = 16 × 72/25 × 72 = 1152/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   80/72 = 80 × 25/72 × 25 = 2000/1800
4. Add the two like fractions:
   1152/1800 + 2000/1800 = 1152 + 2000/1800 = 3152/1800
5. 3152/1800 simplified gives 394/225
6. So, 16/25 + 80/72 = 394/225
   In mixed form: 1169/225

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