Answers

Add 81/28 and 10/80

1^st number: 2 25/28, 2^nd number: 10/80

81/28 + 10/80 is 169/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   81/28 = 81 × 20/28 × 20 = 1620/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   10/80 = 10 × 7/80 × 7 = 70/560
4. Add the two like fractions:
   1620/560 + 70/560 = 1620 + 70/560 = 1690/560
5. 1690/560 simplified gives 169/56
6. So, 81/28 + 10/80 = 169/56
   In mixed form: 31/56

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