Answers

Subtract 18/40 from 1/50

1/50 - 18/40 is -43/100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 40 is 200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 200
2. For the 1st fraction, since 50 × 4 = 200,
   1/50 = 1 × 4/50 × 4 = 4/200
3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
   18/40 = 18 × 5/40 × 5 = 90/200
4. Subtract the two like fractions:
   4/200 - 90/200 = 4 - 90/200 = -86/200
5. After reducing the fraction, the answer is -43/100

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