Answers

Add 21/4 and 20/36

1^st number: 5 1/4, 2^nd number: 20/36

21/4 + 20/36 is 209/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 36 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 4 × 9 = 36,
   21/4 = 21 × 9/4 × 9 = 189/36
3. Likewise, for the 2nd fraction, since 36 × 1 = 36,
   20/36 = 20 × 1/36 × 1 = 20/36
4. Add the two like fractions:
   189/36 + 20/36 = 189 + 20/36 = 209/36
5. So, 21/4 + 20/36 = 209/36
   In mixed form: 529/36

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