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Add 18/20 and 7/84

18/20 + 7/84 is 59/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 84 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    18/20 = 18 × 21/20 × 21 = 378/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    7/84 = 7 × 5/84 × 5 = 35/420
  4. Add the two fractions:
    378/420 + 35/420 = 378 + 35/420 = 413/420
  5. 413/420 simplified gives 59/60
  6. So, 18/20 + 7/84 = 59/60

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