Answers

Subtract 80/40 from 20/18

1^st number: 1 2/18, 2^nd number: 2 0/40

20/18 - 80/40 is -8/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 18 × 20 = 360,
   20/18 = 20 × 20/18 × 20 = 400/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   80/40 = 80 × 9/40 × 9 = 720/360
4. Subtract the two like fractions:
   400/360 - 720/360 = 400 - 720/360 = -320/360
5. After reducing the fraction, the answer is -8/9

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