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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
Vote for Target Test Prep, Newsweek Readers’ Choice Awards 2026
NEWSWEEK READERS’ CHOICE 2026

BIG NEWS! Target Test Prep has been nominated, and they’d love your vote!

TTP has worked incredibly hard to build the best test prep experience possible, and winning Newsweek’s 2026 Readers’ Choice Award for Best Test Prep would mean a lot to them. If TTP has helped you, they’d be incredibly grateful for your vote. You can vote once each day through September 9.

Vote for TTP
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Another Absolute value question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 458
Joined: Sun Aug 31, 2008 10:44 amFollowed by: 1 member
Thanked: 3 times
by gmat009 » Thu Oct 09, 2008 11:01 am
Is |x| = y - z ?
(1) x + y = z
(2) x < 0

here is how how approached :-

To prove:- x=y-z
OR -x=y-z or x=z-y

a) x+y=z
or x=z-y {sufficient}

b) x<0 {insufficient}

Plz. let me know if I am wrong somewhere.....
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 9
Joined: Tue Sep 16, 2008 9:44 am

by rtfact » Thu Oct 09, 2008 11:15 am
the answer is C since:

(1) x+y=z --> -x=y-z thus |x|=y-z is true only if x<=0.
for example, if x=1 then according to (1): -1=y-z which contradicts: 1=y-z
insufficient.

(2) x<0 insufficient as you said.

(1+2) sufficient. x<0, therefore in statement (1): -x=y-z, x is positive, which leads us to conclude that |x|=y-z is true.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 67
Joined: Tue Sep 16, 2008 9:29 pm
Location: new york
Thanked: 2 times

by Gmatss » Thu Oct 09, 2008 11:18 am
is it C?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 458
Joined: Sun Aug 31, 2008 10:44 amFollowed by: 1 member
Thanked: 3 times

by gmat009 » Thu Oct 09, 2008 11:34 am
rtfact wrote:the answer is C since:

(1) x+y=z --> -x=y-z thus |x|=y-z is true only if x<=0.
for example, if x=1 then according to (1): -1=y-z which contradicts: 1=y-z
insufficient.

(2) x<0 insufficient as you said.

(1+2) sufficient. x<0, therefore in statement (1): -x=y-z, x is positive, which leads us to conclude that |x|=y-z is true.
Thanks......
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 833
Joined: Mon Aug 04, 2008 1:56 am
Thanked: 13 times

by vivek.kapoor83 » Thu Oct 09, 2008 12:07 pm
i have same ques.
If in any ques it is asked mod x = mod y
and nothing about -ve and +ve.
Do we need to prove , x=y AND -x =-y........
I am putting essence on AND...it will be AND (both condition)or OR...means any1 of condition
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 246
Joined: Mon May 19, 2008 7:34 am
Location: Texaco Gas Station
Thanked: 7 times

by cubicle_bound_misfit » Thu Oct 09, 2008 2:04 pm
vivek.kapoor83,

there can be different cases for |x| =|y|

x + -

y + -

check how many combos you can have.
Cubicle Bound Misfit
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 133
Joined: Sat Dec 29, 2007 2:43 am
Thanked: 12 times

by raju232007 » Thu Oct 09, 2008 5:46 pm
Is |x|=y-z


statement 1:

x+y=z
x=z-y( if x>0)
x=y-z( if x<0)

Insufficient

statement 2

x<0

Insufficient

Combining both the statements we have x=y-z for x<0


So the ans should be C..Let me know if you still have any doubts
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1