Answers

Add 21/84 and 24/63

21/84 + 24/63 is 53/84.

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,
   21/84 = 21 × 3/84 × 3 = 63/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   24/63 = 24 × 4/63 × 4 = 96/252
4. Add the two like fractions:
   63/252 + 96/252 = 63 + 96/252 = 159/252
5. 159/252 simplified gives 53/84
6. So, 21/84 + 24/63 = 53/84

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