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Subtract 3/84 from 2/5

2/5 - 3/84 is 51/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 5 × 84 = 420,
    2/5 = 2 × 84/5 × 84 = 168/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    3/84 = 3 × 5/84 × 5 = 15/420
  4. Subtract the two like fractions:
    168/420 - 15/420 = 168 - 15/420 = 153/420
  5. After reducing the fraction, the answer is 51/140

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