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Add 20/7 and 21/54

1st number: 2 6/7, 2nd number: 21/54

20/7 + 21/54 is 409/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 54 is 378
  2. For the 1st fraction, since 7 × 54 = 378,
    20/7 = 20 × 54/7 × 54 = 1080/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    21/54 = 21 × 7/54 × 7 = 147/378
  4. Add the two fractions:
    1080/378 + 147/378 = 1080 + 147/378 = 1227/378
  5. After reducing the fraction, the answer is 409/126
  6. In mixed form: 331/126

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