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Add 12/42 and 45/63

12/42 + 45/63 is 1/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 63 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 42 × 3 = 126,
    12/42 = 12 × 3/42 × 3 = 36/126
  3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
    45/63 = 45 × 2/63 × 2 = 90/126
  4. Add the two like fractions:
    36/126 + 90/126 = 36 + 90/126 = 126/126
  5. 126/126 simplified gives 1/1
  6. So, 12/42 + 45/63 = 1/1

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