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Add 12/15 and 9/8

1st number: 12/15, 2nd number: 1 1/8

12/15 + 9/8 is 77/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 8 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 15 × 8 = 120,
    12/15 = 12 × 8/15 × 8 = 96/120
  3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
    9/8 = 9 × 15/8 × 15 = 135/120
  4. Add the two like fractions:
    96/120 + 135/120 = 96 + 135/120 = 231/120
  5. 231/120 simplified gives 77/40
  6. So, 12/15 + 9/8 = 77/40
    In mixed form: 137/40

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