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Add 10/18 and 21/63

10/18 + 21/63 is 8/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 63 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 63 × 2 = 126,
    21/63 = 21 × 2/63 × 2 = 42/126
  4. Add the two fractions:
    70/126 + 42/126 = 70 + 42/126 = 112/126
  5. After reducing the fraction, the answer is 8/9

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