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Add 8/18 and 5/21

8/18 + 5/21 is 43/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    8/18 = 8 × 7/18 × 7 = 56/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    5/21 = 5 × 6/21 × 6 = 30/126
  4. Add the two like fractions:
    56/126 + 30/126 = 56 + 30/126 = 86/126
  5. 86/126 simplified gives 43/63
  6. So, 8/18 + 5/21 = 43/63

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