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Subtract 30/90 from 6/45

6/45 - 30/90 is -1/5.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 45 × 2 = 90,
    6/45 = 6 × 2/45 × 2 = 12/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    30/90 = 30 × 1/90 × 1 = 30/90
  4. Subtract the two like fractions:
    12/90 - 30/90 = 12 - 30/90 = -18/90
  5. After reducing the fraction, the answer is -1/5

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