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Subtract 28/14 from 2/21

1st number: 2/21, 2nd number: 2 0/14

2/21 - 28/14 is -40/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 14 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    2/21 = 2 × 2/21 × 2 = 4/42
  3. Likewise, for the 2nd fraction, since 14 × 3 = 42,
    28/14 = 28 × 3/14 × 3 = 84/42
  4. Subtract the two like fractions:
    4/42 - 84/42 = 4 - 84/42 = -80/42
  5. After reducing the fraction, the answer is -40/21

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