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Subtract 18/84 from 16/45

16/45 - 18/84 is 89/630.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 84 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 45 × 28 = 1260,
    16/45 = 16 × 28/45 × 28 = 448/1260
  3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
    18/84 = 18 × 15/84 × 15 = 270/1260
  4. Subtract the two like fractions:
    448/1260 - 270/1260 = 448 - 270/1260 = 178/1260
  5. After reducing the fraction, the answer is 89/630

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