How do you solve the inequality 2x - 8< 7?

1 Answer
Jul 1, 2016

x <7.5

Explanation:

What I would do is add 8 to both sides of the expression to cancel out the 8 on the left hand side and to get 2x by itself like this:

2x - 8 < 7
+8 +8

When you do that you should get

2x < 15

Now divide both sides by 2 to get x by itself like this:

(2x)/2 < 15/2

When you do that division you're left with x on the left hand side and 7.5 on the right hand side, with a less than sign separating them like this:

x <7.5