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Subtract 40/49 from 30/84

30/84 - 40/49 is -45/98.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 49 is 588
  2. For the 1st fraction, since 84 × 7 = 588,
    30/84 = 30 × 7/84 × 7 = 210/588
  3. Likewise, for the 2nd fraction, since 49 × 12 = 588,
    40/49 = 40 × 12/49 × 12 = 480/588
  4. Subtract the two fractions:
    210/588 - 480/588 = 210 - 480/588 = -270/588
  5. After reducing the fraction, the answer is -45/98

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