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Add 3/21 and 2/20

3/21 + 2/20 is 17/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    3/21 = 3 × 20/21 × 20 = 60/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    2/20 = 2 × 21/20 × 21 = 42/420
  4. Add the two like fractions:
    60/420 + 42/420 = 60 + 42/420 = 102/420
  5. 102/420 simplified gives 17/70
  6. So, 3/21 + 2/20 = 17/70

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