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Add 18/20 and 9/10

18/20 + 9/10 is 9/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 10 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    18/20 = 18 × 1/20 × 1 = 18/20
  3. Likewise, for the 2nd fraction, since 10 × 2 = 20,
    9/10 = 9 × 2/10 × 2 = 18/20
  4. Add the two like fractions:
    18/20 + 18/20 = 18 + 18/20 = 36/20
  5. 36/20 simplified gives 9/5
  6. So, 18/20 + 9/10 = 9/5
    In mixed form: 14/5

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