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Subtract 45/75 from 9/40

9/40 - 45/75 is -3/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 75 is 600

    Next, find the equivalent fraction of both fractional numbers with denominator 600
  2. For the 1st fraction, since 40 × 15 = 600,
    9/40 = 9 × 15/40 × 15 = 135/600
  3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
    45/75 = 45 × 8/75 × 8 = 360/600
  4. Subtract the two like fractions:
    135/600 - 360/600 = 135 - 360/600 = -225/600
  5. After reducing the fraction, the answer is -3/8

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