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Subtract 8/9 from 7/28

7/28 - 8/9 is -23/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 9 is 252
  2. For the 1st fraction, since 28 × 9 = 252,
    7/28 = 7 × 9/28 × 9 = 63/252
  3. Likewise, for the 2nd fraction, since 9 × 28 = 252,
    8/9 = 8 × 28/9 × 28 = 224/252
  4. Subtract the two fractions:
    63/252 - 224/252 = 63 - 224/252 = -161/252
  5. After reducing the fraction, the answer is -23/36

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