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# What is the value of x? (1) (x + y) = x - y (2) x + y = 2 I

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Manager
Joined: 05 Dec 2005
Posts: 92
Location: Manhattan Beach, CA
Followers: 1

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

What is the value of x? (1) (x + y) = x - y (2) x + y = 2 I [#permalink]  25 Apr 2006, 16:21
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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
What is the value of x?
(1) â€“ (x + y) = x - y
(2) x + y = 2

I picked E, but it's A. How does (1) give you a value?

-x-y = x-y ---> -x = x ... then what?
Manager
Joined: 05 Dec 2005
Posts: 92
Location: Manhattan Beach, CA
Followers: 1

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

meaning, the only way a number, n, could equal the negative of itself is for n to equal 0. got it.
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5078
Location: Singapore
Followers: 22

Kudos [?]: 184 [0], given: 0

St1:
-x-y = x-y
-2x = 0
x = 0
Sufficient.

St2:
x+y=2
Many ways to get here: 1+1, 2-1, 3-2 etc... Insufficient.

Manager
Joined: 27 Mar 2006
Posts: 136
Followers: 1

Kudos [?]: 1 [0], given: 0

got A as well
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