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Subtract 7/30 from 3/28

3/28 - 7/30 is -53/420.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 30 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 28 × 15 = 420,
    3/28 = 3 × 15/28 × 15 = 45/420
  3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
    7/30 = 7 × 14/30 × 14 = 98/420
  4. Subtract the two like fractions:
    45/420 - 98/420 = 45 - 98/420 = -53/420

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