Answers

Subtract 40/10 from 28/80

1^st number: 28/80, 2^nd number: 4 0/10

28/80 - 40/10 is -73/20.

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,
   28/80 = 28 × 1/80 × 1 = 28/80
3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
   40/10 = 40 × 8/10 × 8 = 320/80
4. Subtract the two like fractions:
   28/80 - 320/80 = 28 - 320/80 = -292/80
5. After reducing the fraction, the answer is -73/20

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