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Subtract 18/70 from 20/60

20/60 - 18/70 is 8/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    20/60 = 20 × 7/60 × 7 = 140/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    18/70 = 18 × 6/70 × 6 = 108/420
  4. Subtract the two like fractions:
    140/420 - 108/420 = 140 - 108/420 = 32/420
  5. After reducing the fraction, the answer is 8/105

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