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Add 10/20 and 20/42

10/20 + 20/42 is 41/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 42 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    10/20 = 10 × 21/20 × 21 = 210/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    20/42 = 20 × 10/42 × 10 = 200/420
  4. Add the two fractions:
    210/420 + 200/420 = 210 + 200/420 = 410/420
  5. After reducing the fraction, the answer is 41/42

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