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Add 20/21 and 3/36

20/21 + 3/36 is 29/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 36 is 252
  2. For the 1st fraction, since 21 × 12 = 252,
    20/21 = 20 × 12/21 × 12 = 240/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    3/36 = 3 × 7/36 × 7 = 21/252
  4. Add the two fractions:
    240/252 + 21/252 = 240 + 21/252 = 261/252
  5. After reducing the fraction, the answer is 29/28
  6. In mixed form: 11/28

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