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If 5x + 32 = 4 - 2x

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If 5x + 32 = 4 - 2x [#permalink] New post 10 Sep 2017, 10:31
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Question Stats:

85% (00:21) correct 14% (01:01) wrong based on 97 sessions
If 5x + 32 = 4 - 2x, what is the value of x ?

A. -4

B. -3

C. 4

D. 7

E. 12

Practice Questions
Question: 1
Page: 117
Difficulty: easy
[Reveal] Spoiler: OA

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Re: If 5x + 32 = 4 - 2x [#permalink] New post 10 Sep 2017, 10:33
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Explanation

rearranging the expression we do have

\(5x + 2x = 4 - 32\)

\(7x = -28\)

\(X = -4\)

A is the answer
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Re: If 5x + 32 = 4 - 2x [#permalink] New post 15 May 2019, 14:13
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Carcass wrote:
If 5x + 32 = 4 - 2x, what is the value of x ?

A. -4

B. -3

C. 4

D. 7

E. 12


GIVEN: 5x + 32 = 4 - 2x
Add 2x to both sides to get: 7x + 32 = 4
Subtract 32 from both sides to get: 7x = -28
Divide both sides by 7 to get: x = -28/7 = -4

Answer: A

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Brent
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Re: If 5x + 32 = 4 - 2x [#permalink] New post 15 May 2019, 14:15
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Carcass wrote:
If 5x + 32 = 4 - 2x, what is the value of x ?

A. -4

B. -3

C. 4

D. 7

E. 12


Another approach is to test the answer choices

A. -4
Replace x with -4 to get: 5(-4) + 32 = 4 - 2(-4)
Simplify: (-20) + 32 = 4 - (-8)
Simplify: 12 = 12
PERFECT!!

Answer: A

Cheers,
Brent
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Re: If 5x + 32 = 4 - 2x   [#permalink] 15 May 2019, 14:15
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