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Subtract 9/10 from 5/6

5/6 - 9/10 is -1/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 10 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 6 × 5 = 30,
    5/6 = 5 × 5/6 × 5 = 25/30
  3. Likewise, for the 2nd fraction, since 10 × 3 = 30,
    9/10 = 9 × 3/10 × 3 = 27/30
  4. Subtract the two like fractions:
    25/30 - 27/30 = 25 - 27/30 = -2/30
  5. After reducing the fraction, the answer is -1/15

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