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Add 20/60 and 2/21

20/60 + 2/21 is 3/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    20/60 = 20 × 7/60 × 7 = 140/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    2/21 = 2 × 20/21 × 20 = 40/420
  4. Add the two like fractions:
    140/420 + 40/420 = 140 + 40/420 = 180/420
  5. 180/420 simplified gives 3/7
  6. So, 20/60 + 2/21 = 3/7

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