Answers

Subtract 20/21 from 45/20

1^st number: 2 5/20, 2^nd number: 20/21

45/20 - 20/21 is 109/84.

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,
   45/20 = 45 × 21/20 × 21 = 945/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   20/21 = 20 × 20/21 × 20 = 400/420
4. Subtract the two like fractions:
   945/420 - 400/420 = 945 - 400/420 = 545/420
5. After reducing the fraction, the answer is 109/84
6. In mixed form: 125/84

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