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# If 5x + 32 = 4 - 2x

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If 5x + 32 = 4 - 2x [#permalink]  10 Sep 2017, 10:31
Expert's post
00:00

Question Stats:

87% (00:22) correct 12% (01:08) wrong based on 79 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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Founder
Joined: 18 Apr 2015
Posts: 11174
Followers: 238

Kudos [?]: 2785 [0], given: 10623

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

rearranging the expression we do have

$$5x + 2x = 4 - 32$$

$$7x = -28$$

$$X = -4$$

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GRE Instructor
Joined: 10 Apr 2015
Posts: 3257
Followers: 125

Kudos [?]: 3649 [1] , given: 61

Re: If 5x + 32 = 4 - 2x [#permalink]  15 May 2019, 14:13
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Expert's post
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

Cheers,
Brent
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Brent Hanneson – Creator of greenlighttestprep.com

GRE Instructor
Joined: 10 Apr 2015
Posts: 3257
Followers: 125

Kudos [?]: 3649 [1] , given: 61

Re: If 5x + 32 = 4 - 2x [#permalink]  15 May 2019, 14:15
1
KUDOS
Expert's post
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!!

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

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