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Subtract 3/28 from 18/70

18/70 - 3/28 is 3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 28 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 28 × 5 = 140,
    3/28 = 3 × 5/28 × 5 = 15/140
  4. Subtract the two like fractions:
    36/140 - 15/140 = 36 - 15/140 = 21/140
  5. After reducing the fraction, the answer is 3/20

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