Answers

Subtract 36/21 from 63/20

1^st number: 3 3/20, 2^nd number: 1 15/21

63/20 - 36/21 is 201/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   63/20 = 63 × 21/20 × 21 = 1323/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   36/21 = 36 × 20/21 × 20 = 720/420
4. Subtract the two like fractions:
   1323/420 - 720/420 = 1323 - 720/420 = 603/420
5. After reducing the fraction, the answer is 201/140
6. In mixed form: 161/140

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