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Add 20/12 and 45/54

1st number: 1 8/12, 2nd number: 45/54

20/12 + 45/54 is 5/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 54 is 108
  2. For the 1st fraction, since 12 × 9 = 108,
    20/12 = 20 × 9/12 × 9 = 180/108
  3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
    45/54 = 45 × 2/54 × 2 = 90/108
  4. Add the two fractions:
    180/108 + 90/108 = 180 + 90/108 = 270/108
  5. After reducing the fraction, the answer is 5/2
  6. In mixed form: 21/2

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