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Subtract 9/10 from 3/28

3/28 - 9/10 is -111/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 10 is 140
  2. For the 1st fraction, since 28 × 5 = 140,
    3/28 = 3 × 5/28 × 5 = 15/140
  3. Likewise, for the 2nd fraction, since 10 × 14 = 140,
    9/10 = 9 × 14/10 × 14 = 126/140
  4. Subtract the two fractions:
    15/140 - 126/140 = 15 - 126/140 = -111/140

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