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Subtract 45/28 from 36/90

1st number: 36/90, 2nd number: 1 17/28

36/90 - 45/28 is -169/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 28 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 90 × 14 = 1260,
    36/90 = 36 × 14/90 × 14 = 504/1260
  3. Likewise, for the 2nd fraction, since 28 × 45 = 1260,
    45/28 = 45 × 45/28 × 45 = 2025/1260
  4. Subtract the two like fractions:
    504/1260 - 2025/1260 = 504 - 2025/1260 = -1521/1260
  5. After reducing the fraction, the answer is -169/140

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