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Subtract 21/9 from 42/2

1st number: 21 0/2, 2nd number: 2 3/9

42/2 - 21/9 is 56/3.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 9 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 9 × 2 = 18,
    21/9 = 21 × 2/9 × 2 = 42/18
  4. Subtract the two fractions:
    378/18 - 42/18 = 378 - 42/18 = 336/18
  5. After reducing the fraction, the answer is 56/3
  6. In mixed form: 182/3

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