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Subtract 4/7 from 9/27

9/27 - 4/7 is -5/21.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 189
  2. For the 1st fraction, since 27 × 7 = 189,
    9/27 = 9 × 7/27 × 7 = 63/189
  3. Likewise, for the 2nd fraction, since 7 × 27 = 189,
    4/7 = 4 × 27/7 × 27 = 108/189
  4. Subtract the two like fractions:
    63/189 - 108/189 = 63 - 108/189 = -45/189
  5. After reducing the fraction, the answer is -5/21

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