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Subtract 4/7 from 8/9

8/9 - 4/7 is 20/63.

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,
    8/9 = 8 × 7/9 × 7 = 56/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    4/7 = 4 × 9/7 × 9 = 36/63
  4. Subtract the two like fractions:
    56/63 - 36/63 = 56 - 36/63 = 20/63

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