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Subtract 9/84 from 6/40

6/40 - 9/84 is 3/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 84 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    6/40 = 6 × 21/40 × 21 = 126/840
  3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
    9/84 = 9 × 10/84 × 10 = 90/840
  4. Subtract the two like fractions:
    126/840 - 90/840 = 126 - 90/840 = 36/840
  5. After reducing the fraction, the answer is 3/70

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