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Add 10/18 and 40/63

10/18 + 40/63 is 25/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 63 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    40/63 = 40 × 2/63 × 2 = 80/126
  4. Add the two like fractions:
    70/126 + 80/126 = 70 + 80/126 = 150/126
  5. 150/126 simplified gives 25/21
  6. So, 10/18 + 40/63 = 25/21
    In mixed form: 14/21

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