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Subtract 10/42 from 84/20

1st number: 4 4/20, 2nd number: 10/42

84/20 - 10/42 is 416/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    84/20 = 84 × 21/20 × 21 = 1764/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    10/42 = 10 × 10/42 × 10 = 100/420
  4. Subtract the two fractions:
    1764/420 - 100/420 = 1764 - 100/420 = 1664/420
  5. After reducing the fraction, the answer is 416/105
  6. In mixed form: 3101/105

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