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Subtract 12/20 from 80/18

1st number: 4 8/18, 2nd number: 12/20

80/18 - 12/20 is 173/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    80/18 = 80 × 10/18 × 10 = 800/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    12/20 = 12 × 9/20 × 9 = 108/180
  4. Subtract the two like fractions:
    800/180 - 108/180 = 800 - 108/180 = 692/180
  5. After reducing the fraction, the answer is 173/45
  6. In mixed form: 338/45

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