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Subtract 70/18 from 20/75

1st number: 20/75, 2nd number: 3 16/18

20/75 - 70/18 is -163/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 18 is 450
  2. For the 1st fraction, since 75 × 6 = 450,
    20/75 = 20 × 6/75 × 6 = 120/450
  3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
    70/18 = 70 × 25/18 × 25 = 1750/450
  4. Subtract the two fractions:
    120/450 - 1750/450 = 120 - 1750/450 = -1630/450
  5. After reducing the fraction, the answer is -163/45

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