Answers

Add 28/84 and 3/63

28/84 + 3/63 is 8/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   28/84 = 28 × 3/84 × 3 = 84/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   3/63 = 3 × 4/63 × 4 = 12/252
4. Add the two like fractions:
   84/252 + 12/252 = 84 + 12/252 = 96/252
5. 96/252 simplified gives 8/21
6. So, 28/84 + 3/63 = 8/21

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