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Subtract 8/45 from 7/28

7/28 - 8/45 is 13/180.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 45 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    7/28 = 7 × 45/28 × 45 = 315/1260
  3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
    8/45 = 8 × 28/45 × 28 = 224/1260
  4. Subtract the two like fractions:
    315/1260 - 224/1260 = 315 - 224/1260 = 91/1260
  5. After reducing the fraction, the answer is 13/180

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