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Subtract 60/84 from 20/30

20/30 - 60/84 is -1/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 84 is 420
  2. For the 1st fraction, since 30 × 14 = 420,
    20/30 = 20 × 14/30 × 14 = 280/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    60/84 = 60 × 5/84 × 5 = 300/420
  4. Subtract the two fractions:
    280/420 - 300/420 = 280 - 300/420 = -20/420
  5. After reducing the fraction, the answer is -1/21

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