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Add 20/12 and 3/45

1st number: 1 8/12, 2nd number: 3/45

20/12 + 3/45 is 26/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 45 is 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,
    3/45 = 3 × 4/45 × 4 = 12/180
  4. Add the two fractions:
    300/180 + 12/180 = 300 + 12/180 = 312/180
  5. After reducing the fraction, the answer is 26/15
  6. In mixed form: 111/15

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