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Subtract 16/18 from 6/40

6/40 - 16/18 is -133/180.

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,
    6/40 = 6 × 9/40 × 9 = 54/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    16/18 = 16 × 20/18 × 20 = 320/360
  4. Subtract the two like fractions:
    54/360 - 320/360 = 54 - 320/360 = -266/360
  5. After reducing the fraction, the answer is -133/180

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