Answers

Add 18/80 and 63/56

1^st number: 18/80, 2^nd number: 1 7/56

18/80 + 63/56 is 27/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 56 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   18/80 = 18 × 7/80 × 7 = 126/560
3. Likewise, for the 2nd fraction, since 56 × 10 = 560,
   63/56 = 63 × 10/56 × 10 = 630/560
4. Add the two like fractions:
   126/560 + 630/560 = 126 + 630/560 = 756/560
5. 756/560 simplified gives 27/20
6. So, 18/80 + 63/56 = 27/20
   In mixed form: 17/20

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