Answers

Subtract 20/80 from 28/18

1^st number: 1 10/18, 2^nd number: 20/80

28/18 - 20/80 is 47/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 18 × 40 = 720,
   28/18 = 28 × 40/18 × 40 = 1120/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   20/80 = 20 × 9/80 × 9 = 180/720
4. Subtract the two like fractions:
   1120/720 - 180/720 = 1120 - 180/720 = 940/720
5. After reducing the fraction, the answer is 47/36
6. In mixed form: 111/36

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