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Subtract 7/20 from 12/30

12/30 - 7/20 is 1/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 20 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 30 × 2 = 60,
    12/30 = 12 × 2/30 × 2 = 24/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    7/20 = 7 × 3/20 × 3 = 21/60
  4. Subtract the two like fractions:
    24/60 - 21/60 = 24 - 21/60 = 3/60
  5. After reducing the fraction, the answer is 1/20

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