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Subtract 5/4 from 9/10

1st number: 9/10, 2nd number: 1 1/4

9/10 - 5/4 is -7/20.

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,
    9/10 = 9 × 2/10 × 2 = 18/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    5/4 = 5 × 5/4 × 5 = 25/20
  4. Subtract the two fractions:
    18/20 - 25/20 = 18 - 25/20 = -7/20

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