Answers

Add 15/7 and 45/80

1^st number: 2 1/7, 2^nd number: 45/80

15/7 + 45/80 is 303/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   15/7 = 15 × 80/7 × 80 = 1200/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   45/80 = 45 × 7/80 × 7 = 315/560
4. Add the two like fractions:
   1200/560 + 315/560 = 1200 + 315/560 = 1515/560
5. 1515/560 simplified gives 303/112
6. So, 15/7 + 45/80 = 303/112
   In mixed form: 279/112

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