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Add 21/18 and 28/63

1st number: 1 3/18, 2nd number: 28/63

21/18 + 28/63 is 29/18.

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,
    21/18 = 21 × 7/18 × 7 = 147/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    28/63 = 28 × 2/63 × 2 = 56/126
  4. Add the two like fractions:
    147/126 + 56/126 = 147 + 56/126 = 203/126
  5. 203/126 simplified gives 29/18
  6. So, 21/18 + 28/63 = 29/18
    In mixed form: 111/18

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