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Subtract 7/5 from 14/21

1st number: 14/21, 2nd number: 1 2/5

14/21 - 7/5 is -11/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 5 is 105
  2. For the 1st fraction, since 21 × 5 = 105,
    14/21 = 14 × 5/21 × 5 = 70/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    7/5 = 7 × 21/5 × 21 = 147/105
  4. Subtract the two fractions:
    70/105 - 147/105 = 70 - 147/105 = -77/105
  5. After reducing the fraction, the answer is -11/15

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