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Add 12/4 and 36/21

1st number: 3 0/4, 2nd number: 1 15/21

12/4 + 36/21 is 33/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84
  2. For the 1st fraction, since 4 × 21 = 84,
    12/4 = 12 × 21/4 × 21 = 252/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    36/21 = 36 × 4/21 × 4 = 144/84
  4. Add the two fractions:
    252/84 + 144/84 = 252 + 144/84 = 396/84
  5. 396/84 simplified gives 33/7
  6. So, 12/4 + 36/21 = 33/7
    In mixed form: 45/7

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