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Subtract 6/90 from 12/28

12/28 - 6/90 is 38/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    12/28 = 12 × 45/28 × 45 = 540/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    6/90 = 6 × 14/90 × 14 = 84/1260
  4. Subtract the two like fractions:
    540/1260 - 84/1260 = 540 - 84/1260 = 456/1260
  5. After reducing the fraction, the answer is 38/105

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