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Subtract 18/40 from 3/2

1st number: 1 1/2, 2nd number: 18/40

3/2 - 18/40 is 21/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 40 is 40
  2. For the 1st fraction, since 2 × 20 = 40,
    3/2 = 3 × 20/2 × 20 = 60/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    18/40 = 18 × 1/40 × 1 = 18/40
  4. Subtract the two fractions:
    60/40 - 18/40 = 60 - 18/40 = 42/40
  5. After reducing the fraction, the answer is 21/20
  6. In mixed form: 11/20

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