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Subtract 90/27 from 28/45

1st number: 28/45, 2nd number: 3 9/27

28/45 - 90/27 is -122/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 27 is 135
  2. For the 1st fraction, since 45 × 3 = 135,
    28/45 = 28 × 3/45 × 3 = 84/135
  3. Likewise, for the 2nd fraction, since 27 × 5 = 135,
    90/27 = 90 × 5/27 × 5 = 450/135
  4. Subtract the two fractions:
    84/135 - 450/135 = 84 - 450/135 = -366/135
  5. After reducing the fraction, the answer is -122/45

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