Answers

Add 45/28 and 84/63

1^st number: 1 17/28, 2^nd number: 1 21/63

45/28 + 84/63 is 247/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 28 × 9 = 252,
   45/28 = 45 × 9/28 × 9 = 405/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   84/63 = 84 × 4/63 × 4 = 336/252
4. Add the two like fractions:
   405/252 + 336/252 = 405 + 336/252 = 741/252
5. 741/252 simplified gives 247/84
6. So, 45/28 + 84/63 = 247/84
   In mixed form: 279/84

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