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Subtract 7/9 from 4/18

4/18 - 7/9 is -5/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 9 is 18

    Next, find the equivalent fraction of both fractional numbers with denominator 18
  2. For the 1st fraction, since 18 × 1 = 18,
    4/18 = 4 × 1/18 × 1 = 4/18
  3. Likewise, for the 2nd fraction, since 9 × 2 = 18,
    7/9 = 7 × 2/9 × 2 = 14/18
  4. Subtract the two like fractions:
    4/18 - 14/18 = 4 - 14/18 = -10/18
  5. After reducing the fraction, the answer is -5/9

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