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Add 27/54 and 12/90

27/54 + 12/90 is 19/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 90 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 54 × 5 = 270,
    27/54 = 27 × 5/54 × 5 = 135/270
  3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
    12/90 = 12 × 3/90 × 3 = 36/270
  4. Add the two like fractions:
    135/270 + 36/270 = 135 + 36/270 = 171/270
  5. 171/270 simplified gives 19/30
  6. So, 27/54 + 12/90 = 19/30

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