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Subtract 18/80 from 30/12

1st number: 2 6/12, 2nd number: 18/80

30/12 - 18/80 is 91/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 80 is 240
  2. For the 1st fraction, since 12 × 20 = 240,
    30/12 = 30 × 20/12 × 20 = 600/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    18/80 = 18 × 3/80 × 3 = 54/240
  4. Subtract the two fractions:
    600/240 - 54/240 = 600 - 54/240 = 546/240
  5. After reducing the fraction, the answer is 91/40
  6. In mixed form: 211/40

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