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Subtract 7/45 from 28/56

28/56 - 7/45 is 31/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 45 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    28/56 = 28 × 45/56 × 45 = 1260/2520
  3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
    7/45 = 7 × 56/45 × 56 = 392/2520
  4. Subtract the two like fractions:
    1260/2520 - 392/2520 = 1260 - 392/2520 = 868/2520
  5. After reducing the fraction, the answer is 31/90

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