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Subtract 20/54 from 5/45

5/45 - 20/54 is -7/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 45 × 6 = 270,
    5/45 = 5 × 6/45 × 6 = 30/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    20/54 = 20 × 5/54 × 5 = 100/270
  4. Subtract the two like fractions:
    30/270 - 100/270 = 30 - 100/270 = -70/270
  5. After reducing the fraction, the answer is -7/27

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