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Add 5/42 and 35/80

5/42 + 35/80 is 187/336.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 80 is 1680
  2. For the 1st fraction, since 42 × 40 = 1680,
    5/42 = 5 × 40/42 × 40 = 200/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    35/80 = 35 × 21/80 × 21 = 735/1680
  4. Add the two fractions:
    200/1680 + 735/1680 = 200 + 735/1680 = 935/1680
  5. After reducing the fraction, the answer is 187/336

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