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Subtract 12/4 from 21/6

1st number: 3 3/6, 2nd number: 3 0/4

21/6 - 12/4 is 1/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 4 is 12

    Next, find the equivalent fraction of both fractional numbers with denominator 12
  2. For the 1st fraction, since 6 × 2 = 12,
    21/6 = 21 × 2/6 × 2 = 42/12
  3. Likewise, for the 2nd fraction, since 4 × 3 = 12,
    12/4 = 12 × 3/4 × 3 = 36/12
  4. Subtract the two like fractions:
    42/12 - 36/12 = 42 - 36/12 = 6/12
  5. After reducing the fraction, the answer is 1/2

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