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Subtract 18/27 from 28/7

1st number: 4 0/7, 2nd number: 18/27

28/7 - 18/27 is 10/3.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 27 is 189

    Next, find the equivalent fraction of both fractional numbers with denominator 189
  2. For the 1st fraction, since 7 × 27 = 189,
    28/7 = 28 × 27/7 × 27 = 756/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    18/27 = 18 × 7/27 × 7 = 126/189
  4. Subtract the two like fractions:
    756/189 - 126/189 = 756 - 126/189 = 630/189
  5. After reducing the fraction, the answer is 10/3
  6. In mixed form: 31/3

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