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Add 18/4 and 10/21

1st number: 4 2/4, 2nd number: 10/21

18/4 + 10/21 is 209/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    18/4 = 18 × 21/4 × 21 = 378/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    10/21 = 10 × 4/21 × 4 = 40/84
  4. Add the two like fractions:
    378/84 + 40/84 = 378 + 40/84 = 418/84
  5. 418/84 simplified gives 209/42
  6. So, 18/4 + 10/21 = 209/42
    In mixed form: 441/42

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