Do you mean ?

We can split that problem into two inequalities:

1) and 2)

For the first one, we can first multiply both sides of the inequality by ,

and we arrive at .

Then, add to both sides:

We can factor out :

and then divide both sides by , so the final inequality is:

.

It's the same process for the second inequality. Once you have both inequalities, you can mesh them together to form one big inequality with in the center.