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Subtract 18/40 from 9/36

9/36 - 18/40 is -1/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 36 × 10 = 360,
    9/36 = 9 × 10/36 × 10 = 90/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    18/40 = 18 × 9/40 × 9 = 162/360
  4. Subtract the two like fractions:
    90/360 - 162/360 = 90 - 162/360 = -72/360
  5. After reducing the fraction, the answer is -1/5

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