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Add 21/18 and 12/30

1st number: 1 3/18, 2nd number: 12/30

21/18 + 12/30 is 47/30.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    12/30 = 12 × 3/30 × 3 = 36/90
  4. Add the two like fractions:
    105/90 + 36/90 = 105 + 36/90 = 141/90
  5. 141/90 simplified gives 47/30
  6. So, 21/18 + 12/30 = 47/30
    In mixed form: 117/30

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