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Add 3/20 and 3/42

3/20 + 3/42 is 31/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    3/20 = 3 × 21/20 × 21 = 63/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    3/42 = 3 × 10/42 × 10 = 30/420
  4. Add the two like fractions:
    63/420 + 30/420 = 63 + 30/420 = 93/420
  5. 93/420 simplified gives 31/140
  6. So, 3/20 + 3/42 = 31/140

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