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Subtract 18/35 from 18/20

18/20 - 18/35 is 27/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 35 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    18/20 = 18 × 7/20 × 7 = 126/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    18/35 = 18 × 4/35 × 4 = 72/140
  4. Subtract the two like fractions:
    126/140 - 72/140 = 126 - 72/140 = 54/140
  5. After reducing the fraction, the answer is 27/70

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