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Subtract 9/70 from 18/20

18/20 - 9/70 is 27/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 70 is 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 70 × 2 = 140,
    9/70 = 9 × 2/70 × 2 = 18/140
  4. Subtract the two fractions:
    126/140 - 18/140 = 126 - 18/140 = 108/140
  5. After reducing the fraction, the answer is 27/35

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