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Add 21/30 and 5/54

21/30 + 5/54 is 107/135.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 30 × 9 = 270,
    21/30 = 21 × 9/30 × 9 = 189/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    5/54 = 5 × 5/54 × 5 = 25/270
  4. Add the two like fractions:
    189/270 + 25/270 = 189 + 25/270 = 214/270
  5. 214/270 simplified gives 107/135
  6. So, 21/30 + 5/54 = 107/135

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