Answers

Subtract 81/16 from 12/5

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

12/5 - 81/16 is -213/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 5 × 16 = 80,
   12/5 = 12 × 16/5 × 16 = 192/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   81/16 = 81 × 5/16 × 5 = 405/80
4. Subtract the two like fractions:
   192/80 - 405/80 = 192 - 405/80 = -213/80

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