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Subtract 1/6 from 42/21

1st number: 2 0/21, 2nd number: 1/6

42/21 - 1/6 is 11/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    42/21 = 42 × 2/21 × 2 = 84/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    1/6 = 1 × 7/6 × 7 = 7/42
  4. Subtract the two like fractions:
    84/42 - 7/42 = 84 - 7/42 = 77/42
  5. After reducing the fraction, the answer is 11/6
  6. In mixed form: 15/6

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