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Add 9/20 and 81/45

1st number: 9/20, 2nd number: 1 36/45

9/20 + 81/45 is 9/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    9/20 = 9 × 9/20 × 9 = 81/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    81/45 = 81 × 4/45 × 4 = 324/180
  4. Add the two like fractions:
    81/180 + 324/180 = 81 + 324/180 = 405/180
  5. 405/180 simplified gives 9/4
  6. So, 9/20 + 81/45 = 9/4
    In mixed form: 21/4

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