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Add 42/81 and 1/4

42/81 + 1/4 is 83/108.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 4 is 324

    Next, find the equivalent fraction of both fractional numbers with denominator 324
  2. For the 1st fraction, since 81 × 4 = 324,
    42/81 = 42 × 4/81 × 4 = 168/324
  3. Likewise, for the 2nd fraction, since 4 × 81 = 324,
    1/4 = 1 × 81/4 × 81 = 81/324
  4. Add the two like fractions:
    168/324 + 81/324 = 168 + 81/324 = 249/324
  5. 249/324 simplified gives 83/108
  6. So, 42/81 + 1/4 = 83/108

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