Answers

Add 15/56 and 81/80

1^st number: 15/56, 2^nd number: 1 1/80

15/56 + 81/80 is 717/560.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 56 × 10 = 560,
   15/56 = 15 × 10/56 × 10 = 150/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   81/80 = 81 × 7/80 × 7 = 567/560
4. Add the two like fractions:
   150/560 + 567/560 = 150 + 567/560 = 717/560
5. So, 15/56 + 81/80 = 717/560
   In mixed form: 1157/560

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