BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Solving 2x>x+10>-x

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 202
Joined: Tue Sep 08, 2009 11:34 pm
Thanked: 15 times
GMAT Score:760

Solving 2x>x+10>-x

by cbenk121 » Thu Sep 24, 2009 1:07 pm
I'm not sure how to solve this multiple inequality. Here's what I'm thinking.

2x>x+10>-x
x>10>-2x (subtract x from both sides)
x>10 (If x is greater than 10, then -2x will be smaller than 10, so it's redundant).

The answer is x>10, so I worked backwards from the answer to determine how to work through the problem. Anyone have a general strategy of what to do when faced with a multiple inequality, assuming you're asked to solve for x?

Thanks!
Top
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 344
Joined: Mon Sep 14, 2009 5:40 am
Thanked: 28 times
Followed by:3 members
GMAT Score:700

by sunnyjohn » Thu Sep 24, 2009 9:56 pm
Can u post the whole question?
Top
Master | Next Rank: 500 Posts
Posts: 202
Joined: Tue Sep 08, 2009 11:34 pm
Thanked: 15 times
GMAT Score:760

by cbenk121 » Fri Sep 25, 2009 10:46 am
It's not a real GMAT question, rather it's just an exercise in inequalities.

The question is "Solve each of the following inequalities for x". Then the prompt was

2x > x + 10 > -x

I want to know how to solve for x, in case a multiple inequality shows up in my practice questions or the test.
Top
Post new topic Post Reply
• Page 1 of 1