Answers

Subtract 25/18 from 20/40

1^st number: 20/40, 2^nd number: 1 7/18

20/40 - 25/18 is -8/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 18 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   20/40 = 20 × 9/40 × 9 = 180/360
3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
   25/18 = 25 × 20/18 × 20 = 500/360
4. Subtract the two like fractions:
   180/360 - 500/360 = 180 - 500/360 = -320/360
5. After reducing the fraction, the answer is -8/9

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