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Subtract 5/21 from 6/35

6/35 - 5/21 is -1/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 35 × 3 = 105,
    6/35 = 6 × 3/35 × 3 = 18/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    5/21 = 5 × 5/21 × 5 = 25/105
  4. Subtract the two like fractions:
    18/105 - 25/105 = 18 - 25/105 = -7/105
  5. After reducing the fraction, the answer is -1/15

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