Answers

Add 20/21 and 45/36

1^st number: 20/21, 2^nd number: 1 9/36

20/21 + 45/36 is 185/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 21 × 12 = 252,
   20/21 = 20 × 12/21 × 12 = 240/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   45/36 = 45 × 7/36 × 7 = 315/252
4. Add the two like fractions:
   240/252 + 315/252 = 240 + 315/252 = 555/252
5. 555/252 simplified gives 185/84
6. So, 20/21 + 45/36 = 185/84
   In mixed form: 217/84

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