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Subtract 45/4 from 18/10

1st number: 1 8/10, 2nd number: 11 1/4

18/10 - 45/4 is -189/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    45/4 = 45 × 5/4 × 5 = 225/20
  4. Subtract the two like fractions:
    36/20 - 225/20 = 36 - 225/20 = -189/20

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