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Add 45/12 and 63/4

1st number: 3 9/12, 2nd number: 15 3/4

45/12 + 63/4 is 39/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 4 is 12

    Next, find the equivalent fraction of both fractional numbers with denominator 12
  2. For the 1st fraction, since 12 × 1 = 12,
    45/12 = 45 × 1/12 × 1 = 45/12
  3. Likewise, for the 2nd fraction, since 4 × 3 = 12,
    63/4 = 63 × 3/4 × 3 = 189/12
  4. Add the two like fractions:
    45/12 + 189/12 = 45 + 189/12 = 234/12
  5. 234/12 simplified gives 39/2
  6. So, 45/12 + 63/4 = 39/2
    In mixed form: 191/2

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