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Subtract 12/45 from 20/12

1st number: 1 8/12, 2nd number: 12/45

20/12 - 12/45 is 7/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 45 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 12 × 15 = 180,
    20/12 = 20 × 15/12 × 15 = 300/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    12/45 = 12 × 4/45 × 4 = 48/180
  4. Subtract the two like fractions:
    300/180 - 48/180 = 300 - 48/180 = 252/180
  5. After reducing the fraction, the answer is 7/5
  6. In mixed form: 12/5

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