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Subtract 7/18 from 42/2

1st number: 21 0/2, 2nd number: 7/18

42/2 - 7/18 is 371/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 18 is 18
  2. For the 1st fraction, since 2 × 9 = 18,
    42/2 = 42 × 9/2 × 9 = 378/18
  3. Likewise, for the 2nd fraction, since 18 × 1 = 18,
    7/18 = 7 × 1/18 × 1 = 7/18
  4. Subtract the two fractions:
    378/18 - 7/18 = 378 - 7/18 = 371/18
  5. In mixed form: 2011/18

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