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Add 63/18 and 21/7

1st number: 3 9/18, 2nd number: 3 0/7

63/18 + 21/7 is 13/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    63/18 = 63 × 7/18 × 7 = 441/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    21/7 = 21 × 18/7 × 18 = 378/126
  4. Add the two like fractions:
    441/126 + 378/126 = 441 + 378/126 = 819/126
  5. 819/126 simplified gives 13/2
  6. So, 63/18 + 21/7 = 13/2
    In mixed form: 61/2

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