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Add 45/9 and 20/12

1st number: 5 0/9, 2nd number: 1 8/12

45/9 + 20/12 is 20/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 12 is 36

    Next, find the equivalent fraction of both fractional numbers with denominator 36
  2. For the 1st fraction, since 9 × 4 = 36,
    45/9 = 45 × 4/9 × 4 = 180/36
  3. Likewise, for the 2nd fraction, since 12 × 3 = 36,
    20/12 = 20 × 3/12 × 3 = 60/36
  4. Add the two like fractions:
    180/36 + 60/36 = 180 + 60/36 = 240/36
  5. 240/36 simplified gives 20/3
  6. So, 45/9 + 20/12 = 20/3
    In mixed form: 62/3

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