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Subtract 63/80 from 10/84

10/84 - 63/80 is -1123/1680.

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,
    10/84 = 10 × 20/84 × 20 = 200/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    63/80 = 63 × 21/80 × 21 = 1323/1680
  4. Subtract the two fractions:
    200/1680 - 1323/1680 = 200 - 1323/1680 = -1123/1680

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