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Add 35/42 and 4/20

35/42 + 4/20 is 31/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 42 × 10 = 420,
    35/42 = 35 × 10/42 × 10 = 350/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    4/20 = 4 × 21/20 × 21 = 84/420
  4. Add the two like fractions:
    350/420 + 84/420 = 350 + 84/420 = 434/420
  5. 434/420 simplified gives 31/30
  6. So, 35/42 + 4/20 = 31/30
    In mixed form: 11/30

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