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Subtract 18/5 from 9/4

1st number: 2 1/4, 2nd number: 3 3/5

9/4 - 18/5 is -27/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20
  2. For the 1st fraction, since 4 × 5 = 20,
    9/4 = 9 × 5/4 × 5 = 45/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    18/5 = 18 × 4/5 × 4 = 72/20
  4. Subtract the two fractions:
    45/20 - 72/20 = 45 - 72/20 = -27/20

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