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Subtract 18/50 from 4/45

4/45 - 18/50 is -61/225.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 50 is 450
  2. For the 1st fraction, since 45 × 10 = 450,
    4/45 = 4 × 10/45 × 10 = 40/450
  3. Likewise, for the 2nd fraction, since 50 × 9 = 450,
    18/50 = 18 × 9/50 × 9 = 162/450
  4. Subtract the two fractions:
    40/450 - 162/450 = 40 - 162/450 = -122/450
  5. After reducing the fraction, the answer is -61/225

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