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Add 21/15 and 30/18

1st number: 1 6/15, 2nd number: 1 12/18

21/15 + 30/18 is 46/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    21/15 = 21 × 6/15 × 6 = 126/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    30/18 = 30 × 5/18 × 5 = 150/90
  4. Add the two fractions:
    126/90 + 150/90 = 126 + 150/90 = 276/90
  5. After reducing the fraction, the answer is 46/15
  6. In mixed form: 31/15

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