Answers

Subtract 81/16 from 16/20

1^st number: 16/20, 2^nd number: 5 1/16

16/20 - 81/16 is -341/80.

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,
   16/20 = 16 × 4/20 × 4 = 64/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   81/16 = 81 × 5/16 × 5 = 405/80
4. Subtract the two like fractions:
   64/80 - 405/80 = 64 - 405/80 = -341/80

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