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Add 18/42 and 7/27

18/42 + 7/27 is 130/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 27 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    18/42 = 18 × 9/42 × 9 = 162/378
  3. Likewise, for the 2nd fraction, since 27 × 14 = 378,
    7/27 = 7 × 14/27 × 14 = 98/378
  4. Add the two like fractions:
    162/378 + 98/378 = 162 + 98/378 = 260/378
  5. 260/378 simplified gives 130/189
  6. So, 18/42 + 7/27 = 130/189

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