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Add 21/30 and 84/18

1st number: 21/30, 2nd number: 4 12/18

21/30 + 84/18 is 161/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 30 × 3 = 90,
    21/30 = 21 × 3/30 × 3 = 63/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    84/18 = 84 × 5/18 × 5 = 420/90
  4. Add the two like fractions:
    63/90 + 420/90 = 63 + 420/90 = 483/90
  5. 483/90 simplified gives 161/30
  6. So, 21/30 + 84/18 = 161/30
    In mixed form: 511/30

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