Solutions by everydaycalculation.com

68 + 39 is 1312.

- Find the least common denominator or LCM of the two denominators:

LCM of 8 and 9 is**72**

Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,

68 = 6 × 98 × 9 = 5472 - Likewise, for the 2nd fraction, since 9 × 8 = 72,

39 = 3 × 89 × 8 = 2472 - Add the two like fractions:

5472 + 2472 = 54 + 2472 = 7872 - 78/72 simplified gives 1312
- So, 6/8 + 3/9 = 13/12

In mixed form: 1112

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