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Subtract 2/5 from 3/10

3/10 - 2/5 is -1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 5 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 10 × 1 = 10,
    3/10 = 3 × 1/10 × 1 = 3/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    2/5 = 2 × 2/5 × 2 = 4/10
  4. Subtract the two like fractions:
    3/10 - 4/10 = 3 - 4/10 = -1/10

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