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Subtract 12/24 from 9/90

9/90 - 12/24 is -2/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 24 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    9/90 = 9 × 4/90 × 4 = 36/360
  3. Likewise, for the 2nd fraction, since 24 × 15 = 360,
    12/24 = 12 × 15/24 × 15 = 180/360
  4. Subtract the two like fractions:
    36/360 - 180/360 = 36 - 180/360 = -144/360
  5. After reducing the fraction, the answer is -2/5

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