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What is the value of x?

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Manager
Manager
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Joined: 04 Feb 2011
Posts: 63
Location: US
Followers: 2

Kudos [?]: 77 [0], given: 42

What is the value of x? [#permalink]

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New post 05 Mar 2011, 06:00
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

85% (01:30) correct 15% (00:34) wrong based on 95 sessions

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What is the value of x?

(1) – (x + y) = x - y
(2) x + y = 2
[Reveal] Spoiler: OA
1 KUDOS received
Math Forum Moderator
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Joined: 20 Dec 2010
Posts: 2022
Followers: 155

Kudos [?]: 1481 [1] , given: 376

Re: What is the value of x? [#permalink]

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New post 05 Mar 2011, 06:11
1
This post received
KUDOS
1.
– (x + y) = x - y
-x-y=x-y
-x=x
-2x=0
x=0;
Sufficient.

2. x+y=2
x=2-y.
y unknown. x can't be found.
Not sufficient.

Ans: "A"
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Director
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Joined: 01 Feb 2011
Posts: 757
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Kudos [?]: 94 [0], given: 42

Re: What is the value of x? [#permalink]

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New post 06 Mar 2011, 13:23
1.

-x-y = x-y => x=0

One might think , huh two unknowns one equation , how are we gonna find value of x. On calculation ,we can see x =0.

Sufficient

2. y is needed to solve this one.
Not sufficient.


Hence the answer is A.
Intern
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Joined: 03 Apr 2016
Posts: 16
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Kudos [?]: 4 [0], given: 671

Re: What is the value of x? [#permalink]

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New post 12 May 2016, 03:15
please add the oa its a.
Re: What is the value of x?   [#permalink] 12 May 2016, 03:15
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What is the value of x?

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