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Add 42/84 and 9/36

42/84 + 9/36 is 3/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 36 is 252
  2. For the 1st fraction, since 84 × 3 = 252,
    42/84 = 42 × 3/84 × 3 = 126/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    9/36 = 9 × 7/36 × 7 = 63/252
  4. Add the two fractions:
    126/252 + 63/252 = 126 + 63/252 = 189/252
  5. After reducing the fraction, the answer is 3/4

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