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Add 84/2 and 21/90

1st number: 42 0/2, 2nd number: 21/90

84/2 + 21/90 is 1267/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 90 is 90
  2. For the 1st fraction, since 2 × 45 = 90,
    84/2 = 84 × 45/2 × 45 = 3780/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    21/90 = 21 × 1/90 × 1 = 21/90
  4. Add the two fractions:
    3780/90 + 21/90 = 3780 + 21/90 = 3801/90
  5. 3801/90 simplified gives 1267/30
  6. So, 84/2 + 21/90 = 1267/30
    In mixed form: 427/30

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