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Subtract 9/4 from 90/50

1st number: 1 40/50, 2nd number: 2 1/4

90/50 - 9/4 is -9/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 4 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 50 × 2 = 100,
    90/50 = 90 × 2/50 × 2 = 180/100
  3. Likewise, for the 2nd fraction, since 4 × 25 = 100,
    9/4 = 9 × 25/4 × 25 = 225/100
  4. Subtract the two like fractions:
    180/100 - 225/100 = 180 - 225/100 = -45/100
  5. After reducing the fraction, the answer is -9/20

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