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Subtract 4/18 from 2/20

2/20 - 4/18 is -11/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    2/20 = 2 × 9/20 × 9 = 18/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    4/18 = 4 × 10/18 × 10 = 40/180
  4. Subtract the two fractions:
    18/180 - 40/180 = 18 - 40/180 = -22/180
  5. After reducing the fraction, the answer is -11/90

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