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Subtract 3/40 from 21/75

21/75 - 3/40 is 41/200.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 40 is 600

    Next, find the equivalent fraction of both fractional numbers with denominator 600
  2. For the 1st fraction, since 75 × 8 = 600,
    21/75 = 21 × 8/75 × 8 = 168/600
  3. Likewise, for the 2nd fraction, since 40 × 15 = 600,
    3/40 = 3 × 15/40 × 15 = 45/600
  4. Subtract the two like fractions:
    168/600 - 45/600 = 168 - 45/600 = 123/600
  5. After reducing the fraction, the answer is 41/200

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