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Subtract 10/80 from 4/84

4/84 - 10/80 is -13/168.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 80 is 1680
  2. For the 1st fraction, since 84 × 20 = 1680,
    4/84 = 4 × 20/84 × 20 = 80/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    10/80 = 10 × 21/80 × 21 = 210/1680
  4. Subtract the two fractions:
    80/1680 - 210/1680 = 80 - 210/1680 = -130/1680
  5. After reducing the fraction, the answer is -13/168

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