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Subtract 8/18 from 9/45

9/45 - 8/18 is -11/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    9/45 = 9 × 2/45 × 2 = 18/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    8/18 = 8 × 5/18 × 5 = 40/90
  4. Subtract the two like fractions:
    18/90 - 40/90 = 18 - 40/90 = -22/90
  5. After reducing the fraction, the answer is -11/45

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