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# If 3x + y = − 1 and y − 2x = 4, what is the value of x + 2y?

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Math Expert
Joined: 02 Sep 2009
Posts: 53737
If 3x + y = − 1 and y − 2x = 4, what is the value of x + 2y?  [#permalink]

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06 Mar 2019, 23:53
00:00

Difficulty:

25% (medium)

Question Stats:

100% (00:57) correct 0% (00:00) wrong based on 5 sessions

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If $$3x + y = − 1$$ and $$y − 2x = 4$$, what is the value of $$x + 2y$$?

A. − 5

B. − 3

C. 0

D. 3

E. 5

_________________
Intern
Joined: 15 Dec 2018
Posts: 30
Re: If 3x + y = − 1 and y − 2x = 4, what is the value of x + 2y?  [#permalink]

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07 Mar 2019, 00:17
IMO D

Just add the 2 equations

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Re: If 3x + y = − 1 and y − 2x = 4, what is the value of x + 2y?   [#permalink] 07 Mar 2019, 00:17
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# If 3x + y = − 1 and y − 2x = 4, what is the value of x + 2y?

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