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Subtract 42/18 from 20/9

1st number: 2 2/9, 2nd number: 2 6/18

20/9 - 42/18 is -1/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 18 is 18
  2. For the 1st fraction, since 9 × 2 = 18,
    20/9 = 20 × 2/9 × 2 = 40/18
  3. Likewise, for the 2nd fraction, since 18 × 1 = 18,
    42/18 = 42 × 1/18 × 1 = 42/18
  4. Subtract the two fractions:
    40/18 - 42/18 = 40 - 42/18 = -2/18
  5. After reducing the fraction, the answer is -1/9

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