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Add 10/60 and 21/42

10/60 + 21/42 is 2/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 42 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    10/60 = 10 × 7/60 × 7 = 70/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    21/42 = 21 × 10/42 × 10 = 210/420
  4. Add the two like fractions:
    70/420 + 210/420 = 70 + 210/420 = 280/420
  5. 280/420 simplified gives 2/3
  6. So, 10/60 + 21/42 = 2/3

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