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Subtract 21/80 from 49/84

49/84 - 21/80 is 77/240.

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,
    49/84 = 49 × 20/84 × 20 = 980/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    21/80 = 21 × 21/80 × 21 = 441/1680
  4. Subtract the two fractions:
    980/1680 - 441/1680 = 980 - 441/1680 = 539/1680
  5. After reducing the fraction, the answer is 77/240

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