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Add 18/20 and 45/30

1st number: 18/20, 2nd number: 1 15/30

18/20 + 45/30 is 12/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 30 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 20 × 3 = 60,
    18/20 = 18 × 3/20 × 3 = 54/60
  3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
    45/30 = 45 × 2/30 × 2 = 90/60
  4. Add the two like fractions:
    54/60 + 90/60 = 54 + 90/60 = 144/60
  5. 144/60 simplified gives 12/5
  6. So, 18/20 + 45/30 = 12/5
    In mixed form: 22/5

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