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Subtract 28/40 from 4/6

4/6 - 28/40 is -1/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 40 is 120
  2. For the 1st fraction, since 6 × 20 = 120,
    4/6 = 4 × 20/6 × 20 = 80/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    28/40 = 28 × 3/40 × 3 = 84/120
  4. Subtract the two fractions:
    80/120 - 84/120 = 80 - 84/120 = -4/120
  5. After reducing the fraction, the answer is -1/30

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