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Subtract 30/75 from 10/20

10/20 - 30/75 is 1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 75 is 300

    Next, find the equivalent fraction of both fractional numbers with denominator 300
  2. For the 1st fraction, since 20 × 15 = 300,
    10/20 = 10 × 15/20 × 15 = 150/300
  3. Likewise, for the 2nd fraction, since 75 × 4 = 300,
    30/75 = 30 × 4/75 × 4 = 120/300
  4. Subtract the two like fractions:
    150/300 - 120/300 = 150 - 120/300 = 30/300
  5. After reducing the fraction, the answer is 1/10

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