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Subtract 18/40 from 4/50

4/50 - 18/40 is -37/100.

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,
    4/50 = 4 × 4/50 × 4 = 16/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    18/40 = 18 × 5/40 × 5 = 90/200
  4. Subtract the two like fractions:
    16/200 - 90/200 = 16 - 90/200 = -74/200
  5. After reducing the fraction, the answer is -37/100

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