Answers

Subtract 20/21 from 75/12

1^st number: 6 3/12, 2^nd number: 20/21

75/12 - 20/21 is 445/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   75/12 = 75 × 7/12 × 7 = 525/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   20/21 = 20 × 4/21 × 4 = 80/84
4. Subtract the two like fractions:
   525/84 - 80/84 = 525 - 80/84 = 445/84
5. In mixed form: 525/84

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