(69,77•5,8-69,67 •5,8+0,42) : 0,4

To solve this expression, we need to follow the order of operations (PEMDAS/BODMAS):

First, we need to simplify the expression inside the parentheses:

69.77 * 5.8 - 69.67 * 5.8 + 0.42

Next, we can perform the multiplication:

403.286 - 403.826 + 0.42

Now, we can perform the subtraction:

-0.54 + 0.42

Finally, we can perform the addition:

-0.12

Now, we can divide this result by 0.4:

-0.12 / 0.4 = -0.3

Therefore, the answer to the expression is -0.3.