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Subtract 18/80 from 20/12

1st number: 1 8/12, 2nd number: 18/80

20/12 - 18/80 is 173/120.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 12 × 20 = 240,
    20/12 = 20 × 20/12 × 20 = 400/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    18/80 = 18 × 3/80 × 3 = 54/240
  4. Subtract the two like fractions:
    400/240 - 54/240 = 400 - 54/240 = 346/240
  5. After reducing the fraction, the answer is 173/120
  6. In mixed form: 153/120

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