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Add 21/18 and 30/7

1st number: 1 3/18, 2nd number: 4 2/7

21/18 + 30/7 is 229/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    21/18 = 21 × 7/18 × 7 = 147/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    30/7 = 30 × 18/7 × 18 = 540/126
  4. Add the two fractions:
    147/126 + 540/126 = 147 + 540/126 = 687/126
  5. After reducing the fraction, the answer is 229/42
  6. In mixed form: 519/42

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