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If 2x + 3y = 15 and y = 1, then 2x =

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If 2x + 3y = 15 and y = 1, then 2x = [#permalink] New post 13 Aug 2019, 07:34
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Question Stats:

100% (00:11) correct 0% (00:00) wrong based on 2 sessions
If 2x + 3y = 15 and y = 1, then 2x =

(A) 18

(B) 12

(C) 10

(D) 9

(E) 3
[Reveal] Spoiler: OA

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Re: If 2x + 3y = 15 and y = 1, then 2x = [#permalink] New post 13 Aug 2019, 07:42
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Expert's post
Carcass wrote:
If 2x + 3y = 15 and y = 1, then 2x =

(A) 18

(B) 12

(C) 10

(D) 9

(E) 3


Plug y = 1 into the given equation to get: 2x + 3(1) = 15
Simplify: 2x + 3 = 15
Subtract 3 from both sides to get: 2x = 12

Answer: B

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Brent
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Re: If 2x + 3y = 15 and y = 1, then 2x =   [#permalink] 13 Aug 2019, 07:42
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