Answers

Add 5/21 and 63/28

1^st number: 5/21, 2^nd number: 2 7/28

5/21 + 63/28 is 209/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   5/21 = 5 × 4/21 × 4 = 20/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   63/28 = 63 × 3/28 × 3 = 189/84
4. Add the two like fractions:
   20/84 + 189/84 = 20 + 189/84 = 209/84
5. So, 5/21 + 63/28 = 209/84
   In mixed form: 241/84

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