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Subtract 9/5 from 1/84

1st number: 1/84, 2nd number: 1 4/5

1/84 - 9/5 is -751/420.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 84 × 5 = 420,
    1/84 = 1 × 5/84 × 5 = 5/420
  3. Likewise, for the 2nd fraction, since 5 × 84 = 420,
    9/5 = 9 × 84/5 × 84 = 756/420
  4. Subtract the two like fractions:
    5/420 - 756/420 = 5 - 756/420 = -751/420

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