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Subtract 3/7 from 9/28

9/28 - 3/7 is -3/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 7 is 28
  2. For the 1st fraction, since 28 × 1 = 28,
    9/28 = 9 × 1/28 × 1 = 9/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    3/7 = 3 × 4/7 × 4 = 12/28
  4. Subtract the two fractions:
    9/28 - 12/28 = 9 - 12/28 = -3/28

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