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Add 72/4 and 20/81

1st number: 18 0/4, 2nd number: 20/81

72/4 + 20/81 is 1478/81.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 81 is 324
  2. For the 1st fraction, since 4 × 81 = 324,
    72/4 = 72 × 81/4 × 81 = 5832/324
  3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
    20/81 = 20 × 4/81 × 4 = 80/324
  4. Add the two fractions:
    5832/324 + 80/324 = 5832 + 80/324 = 5912/324
  5. 5912/324 simplified gives 1478/81
  6. So, 72/4 + 20/81 = 1478/81
    In mixed form: 1820/81

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