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Add 81/18 and 20/24

1st number: 4 9/18, 2nd number: 20/24

81/18 + 20/24 is 16/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 24 is 72

    Next, find the equivalent fraction of both fractional numbers with denominator 72
  2. For the 1st fraction, since 18 × 4 = 72,
    81/18 = 81 × 4/18 × 4 = 324/72
  3. Likewise, for the 2nd fraction, since 24 × 3 = 72,
    20/24 = 20 × 3/24 × 3 = 60/72
  4. Add the two like fractions:
    324/72 + 60/72 = 324 + 60/72 = 384/72
  5. 384/72 simplified gives 16/3
  6. So, 81/18 + 20/24 = 16/3
    In mixed form: 51/3

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