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Subtract 40/54 from 45/90

45/90 - 40/54 is -13/54.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 90 × 3 = 270,
    45/90 = 45 × 3/90 × 3 = 135/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    40/54 = 40 × 5/54 × 5 = 200/270
  4. Subtract the two like fractions:
    135/270 - 200/270 = 135 - 200/270 = -65/270
  5. After reducing the fraction, the answer is -13/54

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