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Subtract 9/7 from 8/12

1st number: 8/12, 2nd number: 1 2/7

8/12 - 9/7 is -13/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 7 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    8/12 = 8 × 7/12 × 7 = 56/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    9/7 = 9 × 12/7 × 12 = 108/84
  4. Subtract the two fractions:
    56/84 - 108/84 = 56 - 108/84 = -52/84
  5. After reducing the fraction, the answer is -13/21

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