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Add 20/36 and 1/21

20/36 + 1/21 is 38/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 21 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    20/36 = 20 × 7/36 × 7 = 140/252
  3. Likewise, for the 2nd fraction, since 21 × 12 = 252,
    1/21 = 1 × 12/21 × 12 = 12/252
  4. Add the two like fractions:
    140/252 + 12/252 = 140 + 12/252 = 152/252
  5. 152/252 simplified gives 38/63
  6. So, 20/36 + 1/21 = 38/63

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