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Add 1/27 and 15/21

1/27 + 15/21 is 142/189.

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,
    1/27 = 1 × 7/27 × 7 = 7/189
  3. Likewise, for the 2nd fraction, since 21 × 9 = 189,
    15/21 = 15 × 9/21 × 9 = 135/189
  4. Add the two like fractions:
    7/189 + 135/189 = 7 + 135/189 = 142/189
  5. So, 1/27 + 15/21 = 142/189

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