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Subtract 9/36 from 9/42

9/42 - 9/36 is -1/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 36 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 42 × 6 = 252,
    9/42 = 9 × 6/42 × 6 = 54/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    9/36 = 9 × 7/36 × 7 = 63/252
  4. Subtract the two like fractions:
    54/252 - 63/252 = 54 - 63/252 = -9/252
  5. After reducing the fraction, the answer is -1/28

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