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Subtract 2/45 from 1/40

1/40 - 2/45 is -7/360.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 45 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    1/40 = 1 × 9/40 × 9 = 9/360
  3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
    2/45 = 2 × 8/45 × 8 = 16/360
  4. Subtract the two like fractions:
    9/360 - 16/360 = 9 - 16/360 = -7/360

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