Answers

Add 80/72 and 14/42

1^st number: 1 8/72, 2^nd number: 14/42

80/72 + 14/42 is 13/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 42 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   80/72 = 80 × 7/72 × 7 = 560/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   14/42 = 14 × 12/42 × 12 = 168/504
4. Add the two like fractions:
   560/504 + 168/504 = 560 + 168/504 = 728/504
5. 728/504 simplified gives 13/9
6. So, 80/72 + 14/42 = 13/9
   In mixed form: 14/9

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