Answers

Subtract 81/10 from 10/80

1^st number: 10/80, 2^nd number: 8 1/10

10/80 - 81/10 is -319/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 10 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   10/80 = 10 × 1/80 × 1 = 10/80
3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
   81/10 = 81 × 8/10 × 8 = 648/80
4. Subtract the two like fractions:
   10/80 - 648/80 = 10 - 648/80 = -638/80
5. After reducing the fraction, the answer is -319/40

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