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Subtract 24/90 from 12/40

12/40 - 24/90 is 1/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    12/40 = 12 × 9/40 × 9 = 108/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    24/90 = 24 × 4/90 × 4 = 96/360
  4. Subtract the two like fractions:
    108/360 - 96/360 = 108 - 96/360 = 12/360
  5. After reducing the fraction, the answer is 1/30

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