Explanation

To evaluate the expression, we need to find a common denominator. The least common multiple (LCM) of 9, 8, and 3 is 72.

Let's convert each fraction:

7/9 = (7 × 8) / (9 × 8) = 56/72

6/8 = (6 × 9) / (8 × 9) = 54/72

6/3 = (6 × 24) / (3 × 24) = 144/72

Now, add the fractions:

56/72 + 54/72 + 144/72

= (56 + 54 + 144) / 72

= 254/72

Simplify the fraction:

254/72 = 127/36