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Subtract 1/40 from 20/18

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

20/18 - 1/40 is 391/360.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 18 × 20 = 360,
    20/18 = 20 × 20/18 × 20 = 400/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    1/40 = 1 × 9/40 × 9 = 9/360
  4. Subtract the two like fractions:
    400/360 - 9/360 = 400 - 9/360 = 391/360
  5. In mixed form: 131/360

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