Answers

Subtract 21/20 from 28/75

1^st number: 28/75, 2^nd number: 1 1/20

28/75 - 21/20 is -203/300.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 20 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   28/75 = 28 × 4/75 × 4 = 112/300
3. Likewise, for the 2nd fraction, since 20 × 15 = 300,
   21/20 = 21 × 15/20 × 15 = 315/300
4. Subtract the two like fractions:
   112/300 - 315/300 = 112 - 315/300 = -203/300

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