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Subtract 2/27 from 28/21

1st number: 1 7/21, 2nd number: 2/27

28/21 - 2/27 is 34/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 27 is 189
  2. For the 1st fraction, since 21 × 9 = 189,
    28/21 = 28 × 9/21 × 9 = 252/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    2/27 = 2 × 7/27 × 7 = 14/189
  4. Subtract the two fractions:
    252/189 - 14/189 = 252 - 14/189 = 238/189
  5. After reducing the fraction, the answer is 34/27
  6. In mixed form: 17/27

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