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Subtract 6/7 from 7/9

7/9 - 6/7 is -5/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 7 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 9 × 7 = 63,
    7/9 = 7 × 7/9 × 7 = 49/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    6/7 = 6 × 9/7 × 9 = 54/63
  4. Subtract the two like fractions:
    49/63 - 54/63 = 49 - 54/63 = -5/63

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