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Subtract 30/90 from 45/75

45/75 - 30/90 is 4/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450

    Next, find the equivalent fraction of both fractional numbers with denominator 450
  2. For the 1st fraction, since 75 × 6 = 450,
    45/75 = 45 × 6/75 × 6 = 270/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    30/90 = 30 × 5/90 × 5 = 150/450
  4. Subtract the two like fractions:
    270/450 - 150/450 = 270 - 150/450 = 120/450
  5. After reducing the fraction, the answer is 4/15

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