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Add 21/3 and 8/18

1st number: 7 0/3, 2nd number: 8/18

21/3 + 8/18 is 67/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 18 is 18

    Next, find the equivalent fraction of both fractional numbers with denominator 18
  2. For the 1st fraction, since 3 × 6 = 18,
    21/3 = 21 × 6/3 × 6 = 126/18
  3. Likewise, for the 2nd fraction, since 18 × 1 = 18,
    8/18 = 8 × 1/18 × 1 = 8/18
  4. Add the two like fractions:
    126/18 + 8/18 = 126 + 8/18 = 134/18
  5. 134/18 simplified gives 67/9
  6. So, 21/3 + 8/18 = 67/9
    In mixed form: 74/9

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