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Subtract 5/18 from 10/40

10/40 - 5/18 is -1/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 18 is 360
  2. For the 1st fraction, since 40 × 9 = 360,
    10/40 = 10 × 9/40 × 9 = 90/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    5/18 = 5 × 20/18 × 20 = 100/360
  4. Subtract the two fractions:
    90/360 - 100/360 = 90 - 100/360 = -10/360
  5. After reducing the fraction, the answer is -1/36

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