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Add 10/18 and 8/21

10/18 + 8/21 is 59/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    10/18 = 10 × 7/18 × 7 = 70/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    8/21 = 8 × 6/21 × 6 = 48/126
  4. Add the two fractions:
    70/126 + 48/126 = 70 + 48/126 = 118/126
  5. After reducing the fraction, the answer is 59/63

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