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Subtract 49/75 from 7/21

7/21 - 49/75 is -8/25.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 75 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 21 × 25 = 525,
    7/21 = 7 × 25/21 × 25 = 175/525
  3. Likewise, for the 2nd fraction, since 75 × 7 = 525,
    49/75 = 49 × 7/75 × 7 = 343/525
  4. Subtract the two like fractions:
    175/525 - 343/525 = 175 - 343/525 = -168/525
  5. After reducing the fraction, the answer is -8/25

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