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Subtract 9/42 from 18/60

18/60 - 9/42 is 3/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    18/60 = 18 × 7/60 × 7 = 126/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    9/42 = 9 × 10/42 × 10 = 90/420
  4. Subtract the two like fractions:
    126/420 - 90/420 = 126 - 90/420 = 36/420
  5. After reducing the fraction, the answer is 3/35

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