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Subtract 35/36 from 15/42

15/42 - 35/36 is -155/252.

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,
    15/42 = 15 × 6/42 × 6 = 90/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    35/36 = 35 × 7/36 × 7 = 245/252
  4. Subtract the two like fractions:
    90/252 - 245/252 = 90 - 245/252 = -155/252

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