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Add 20/7 and 21/27

1st number: 2 6/7, 2nd number: 21/27

20/7 + 21/27 is 229/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 27 is 189
  2. For the 1st fraction, since 7 × 27 = 189,
    20/7 = 20 × 27/7 × 27 = 540/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    21/27 = 21 × 7/27 × 7 = 147/189
  4. Add the two fractions:
    540/189 + 147/189 = 540 + 147/189 = 687/189
  5. After reducing the fraction, the answer is 229/63
  6. In mixed form: 340/63

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