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Subtract 9/4 from 18/10

1st number: 1 8/10, 2nd number: 2 1/4

18/10 - 9/4 is -9/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20
  2. For the 1st fraction, since 10 × 2 = 20,
    18/10 = 18 × 2/10 × 2 = 36/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    9/4 = 9 × 5/4 × 5 = 45/20
  4. Subtract the two fractions:
    36/20 - 45/20 = 36 - 45/20 = -9/20

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