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Add 8/27 and 20/21

8/27 + 20/21 is 236/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 21 is 189

    Next, find the equivalent fraction of both fractional numbers with denominator 189
  2. For the 1st fraction, since 27 × 7 = 189,
    8/27 = 8 × 7/27 × 7 = 56/189
  3. Likewise, for the 2nd fraction, since 21 × 9 = 189,
    20/21 = 20 × 9/21 × 9 = 180/189
  4. Add the two like fractions:
    56/189 + 180/189 = 56 + 180/189 = 236/189
  5. So, 8/27 + 20/21 = 236/189
    In mixed form: 147/189

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