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Add 15/84 and 9/8

1st number: 15/84, 2nd number: 1 1/8

15/84 + 9/8 is 73/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 8 is 168
  2. For the 1st fraction, since 84 × 2 = 168,
    15/84 = 15 × 2/84 × 2 = 30/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    9/8 = 9 × 21/8 × 21 = 189/168
  4. Add the two fractions:
    30/168 + 189/168 = 30 + 189/168 = 219/168
  5. After reducing the fraction, the answer is 73/56
  6. In mixed form: 117/56

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