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Subtract 18/84 from 36/20

1st number: 1 16/20, 2nd number: 18/84

36/20 - 18/84 is 111/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 84 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    36/20 = 36 × 21/20 × 21 = 756/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    18/84 = 18 × 5/84 × 5 = 90/420
  4. Subtract the two fractions:
    756/420 - 90/420 = 756 - 90/420 = 666/420
  5. After reducing the fraction, the answer is 111/70
  6. In mixed form: 141/70

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