Question

How do you solve and graph the inequality `7<3x+5<11`?

Answer 1

You may start by subtracting 5 all over. Adding and subtracting are always allowed.

Explanation:

`->2<3x<6`

Then you may divide by 3. Since this is a positive number, the inequality sign stay as they are (multiplying or dividing by a negative number would have them reversed).

`-> 2/3 < x <2`