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Add 15/42 and 5/54

15/42 + 5/54 is 85/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 42 × 9 = 378,
    15/42 = 15 × 9/42 × 9 = 135/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    5/54 = 5 × 7/54 × 7 = 35/378
  4. Add the two like fractions:
    135/378 + 35/378 = 135 + 35/378 = 170/378
  5. 170/378 simplified gives 85/189
  6. So, 15/42 + 5/54 = 85/189

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