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Add 1/20 and 28/42

1/20 + 28/42 is 43/60.

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,
    1/20 = 1 × 21/20 × 21 = 21/420
  3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
    28/42 = 28 × 10/42 × 10 = 280/420
  4. Add the two like fractions:
    21/420 + 280/420 = 21 + 280/420 = 301/420
  5. 301/420 simplified gives 43/60
  6. So, 1/20 + 28/42 = 43/60

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