Answers

Add 81/28 and 63/10

1^st number: 2 25/28, 2^nd number: 6 3/10

81/28 + 63/10 is 1287/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 10 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   81/28 = 81 × 5/28 × 5 = 405/140
3. Likewise, for the 2nd fraction, since 10 × 14 = 140,
   63/10 = 63 × 14/10 × 14 = 882/140
4. Add the two like fractions:
   405/140 + 882/140 = 405 + 882/140 = 1287/140
5. So, 81/28 + 63/10 = 1287/140
   In mixed form: 927/140

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