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Subtract 1/70 from 1/20

1/20 - 1/70 is 1/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    1/20 = 1 × 7/20 × 7 = 7/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    1/70 = 1 × 2/70 × 2 = 2/140
  4. Subtract the two like fractions:
    7/140 - 2/140 = 7 - 2/140 = 5/140
  5. After reducing the fraction, the answer is 1/28

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