Answers

Subtract 45/16 from 30/20

1^st number: 1 10/20, 2^nd number: 2 13/16

30/20 - 45/16 is -21/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   30/20 = 30 × 4/20 × 4 = 120/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   45/16 = 45 × 5/16 × 5 = 225/80
4. Subtract the two like fractions:
   120/80 - 225/80 = 120 - 225/80 = -105/80
5. After reducing the fraction, the answer is -21/16

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