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Add 84/42 and 42/21

1st number: 2 0/42, 2nd number: 2 0/21

84/42 + 42/21 is 4/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 21 is 42
  2. For the 1st fraction, since 42 × 1 = 42,
    84/42 = 84 × 1/42 × 1 = 84/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    42/21 = 42 × 2/21 × 2 = 84/42
  4. Add the two fractions:
    84/42 + 84/42 = 84 + 84/42 = 168/42
  5. 168/42 simplified gives 4/1
  6. So, 84/42 + 42/21 = 4/1

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