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Subtract 20/6 from 5/21

1st number: 5/21, 2nd number: 3 2/6

5/21 - 20/6 is -65/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 6 is 42
  2. For the 1st fraction, since 21 × 2 = 42,
    5/21 = 5 × 2/21 × 2 = 10/42
  3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
    20/6 = 20 × 7/6 × 7 = 140/42
  4. Subtract the two fractions:
    10/42 - 140/42 = 10 - 140/42 = -130/42
  5. After reducing the fraction, the answer is -65/21

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