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Add 12/36 and 21/42

12/36 + 21/42 is 5/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 42 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    12/36 = 12 × 7/36 × 7 = 84/252
  3. Likewise, for the 2nd fraction, since 42 × 6 = 252,
    21/42 = 21 × 6/42 × 6 = 126/252
  4. Add the two like fractions:
    84/252 + 126/252 = 84 + 126/252 = 210/252
  5. 210/252 simplified gives 5/6
  6. So, 12/36 + 21/42 = 5/6

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