This one has a few steps. First I would separate them each into a different equation and solve them like a regular inequality. But use the middle expression in each inequality equation.
18k - 6 < 34 - 2k
20k - 6 < 34
20k < 40
k < 2
34 - 2k < 10k + 46
34 < 12k + 46
-12 < 12k
-1 < k
Now we know that K has to be greater than -1 but smaller than 2. The answer would then be
-1 < k < 2