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Subtract 3/4 from 18/70

18/70 - 3/4 is -69/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 4 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 70 × 2 = 140,
    18/70 = 18 × 2/70 × 2 = 36/140
  3. Likewise, for the 2nd fraction, since 4 × 35 = 140,
    3/4 = 3 × 35/4 × 35 = 105/140
  4. Subtract the two like fractions:
    36/140 - 105/140 = 36 - 105/140 = -69/140

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