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Subtract 49/40 from 6/18

1st number: 6/18, 2nd number: 1 9/40

6/18 - 49/40 is -107/120.

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,
    6/18 = 6 × 20/18 × 20 = 120/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    49/40 = 49 × 9/40 × 9 = 441/360
  4. Subtract the two like fractions:
    120/360 - 441/360 = 120 - 441/360 = -321/360
  5. After reducing the fraction, the answer is -107/120

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