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Subtract 10/18 from 3/10

3/10 - 10/18 is -23/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 10 × 9 = 90,
    3/10 = 3 × 9/10 × 9 = 27/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    10/18 = 10 × 5/18 × 5 = 50/90
  4. Subtract the two like fractions:
    27/90 - 50/90 = 27 - 50/90 = -23/90

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