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Add 84/10 and 42/84

1st number: 8 4/10, 2nd number: 42/84

84/10 + 42/84 is 89/10.

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,
    84/10 = 84 × 42/10 × 42 = 3528/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    42/84 = 42 × 5/84 × 5 = 210/420
  4. Add the two fractions:
    3528/420 + 210/420 = 3528 + 210/420 = 3738/420
  5. 3738/420 simplified gives 89/10
  6. So, 84/10 + 42/84 = 89/10
    In mixed form: 89/10

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