Answers

Subtract 40/9 from 28/80

1^st number: 28/80, 2^nd number: 4 4/9

28/80 - 40/9 is -737/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 9 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   28/80 = 28 × 9/80 × 9 = 252/720
3. Likewise, for the 2nd fraction, since 9 × 80 = 720,
   40/9 = 40 × 80/9 × 80 = 3200/720
4. Subtract the two like fractions:
   252/720 - 3200/720 = 252 - 3200/720 = -2948/720
5. After reducing the fraction, the answer is -737/180

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