Answers

Subtract 10/20 from 28/80

28/80 - 10/20 is -3/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   28/80 = 28 × 1/80 × 1 = 28/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   10/20 = 10 × 4/20 × 4 = 40/80
4. Subtract the two like fractions:
   28/80 - 40/80 = 28 - 40/80 = -12/80
5. After reducing the fraction, the answer is -3/20

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