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Add 35/42 and 9/20

35/42 + 9/20 is 77/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 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,
    9/20 = 9 × 21/20 × 21 = 189/420
  4. Add the two fractions:
    350/420 + 189/420 = 350 + 189/420 = 539/420
  5. After reducing the fraction, the answer is 77/60
  6. In mixed form: 117/60

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