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Add 9/10 and 5/84

9/10 + 5/84 is 403/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 84 is 420
  2. For the 1st fraction, since 10 × 42 = 420,
    9/10 = 9 × 42/10 × 42 = 378/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    5/84 = 5 × 5/84 × 5 = 25/420
  4. Add the two fractions:
    378/420 + 25/420 = 378 + 25/420 = 403/420

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