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Subtract 42/45 from 4/27

4/27 - 42/45 is -106/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 45 is 135

    Next, find the equivalent fraction of both fractional numbers with denominator 135
  2. For the 1st fraction, since 27 × 5 = 135,
    4/27 = 4 × 5/27 × 5 = 20/135
  3. Likewise, for the 2nd fraction, since 45 × 3 = 135,
    42/45 = 42 × 3/45 × 3 = 126/135
  4. Subtract the two like fractions:
    20/135 - 126/135 = 20 - 126/135 = -106/135

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