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Subtract 24/18 from 20/40

1st number: 20/40, 2nd number: 1 6/18

20/40 - 24/18 is -5/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 18 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    20/40 = 20 × 9/40 × 9 = 180/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    24/18 = 24 × 20/18 × 20 = 480/360
  4. Subtract the two like fractions:
    180/360 - 480/360 = 180 - 480/360 = -300/360
  5. After reducing the fraction, the answer is -5/6

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