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Subtract 9/7 from 1/40

1st number: 1/40, 2nd number: 1 2/7

1/40 - 9/7 is -353/280.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    1/40 = 1 × 7/40 × 7 = 7/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    9/7 = 9 × 40/7 × 40 = 360/280
  4. Subtract the two like fractions:
    7/280 - 360/280 = 7 - 360/280 = -353/280

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