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Add 20/30 and 21/54

20/30 + 21/54 is 19/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 54 is 270
  2. For the 1st fraction, since 30 × 9 = 270,
    20/30 = 20 × 9/30 × 9 = 180/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    21/54 = 21 × 5/54 × 5 = 105/270
  4. Add the two fractions:
    180/270 + 105/270 = 180 + 105/270 = 285/270
  5. After reducing the fraction, the answer is 19/18
  6. In mixed form: 11/18

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