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Subtract 9/7 from 63/84

1st number: 63/84, 2nd number: 1 2/7

63/84 - 9/7 is -15/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 7 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 84 × 1 = 84,
    63/84 = 63 × 1/84 × 1 = 63/84
  3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
    9/7 = 9 × 12/7 × 12 = 108/84
  4. Subtract the two like fractions:
    63/84 - 108/84 = 63 - 108/84 = -45/84
  5. After reducing the fraction, the answer is -15/28

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