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Subtract 20/7 from 1/9

1st number: 1/9, 2nd number: 2 6/7

1/9 - 20/7 is -173/63.

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,
    1/9 = 1 × 7/9 × 7 = 7/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    20/7 = 20 × 9/7 × 9 = 180/63
  4. Subtract the two like fractions:
    7/63 - 180/63 = 7 - 180/63 = -173/63

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