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Subtract 4/40 from 28/32

28/32 - 4/40 is 31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 32 and 40 is 160

    Next, find the equivalent fraction of both fractional numbers with denominator 160
  2. For the 1st fraction, since 32 × 5 = 160,
    28/32 = 28 × 5/32 × 5 = 140/160
  3. Likewise, for the 2nd fraction, since 40 × 4 = 160,
    4/40 = 4 × 4/40 × 4 = 16/160
  4. Subtract the two like fractions:
    140/160 - 16/160 = 140 - 16/160 = 124/160
  5. After reducing the fraction, the answer is 31/40

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