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# 7a + 8 = 8a − 24

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GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4810
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 118

Kudos [?]: 1897 [0], given: 397

7a + 8 = 8a − 24 [#permalink]  04 Mar 2018, 13:45
Expert's post
00:00

Question Stats:

88% (00:11) correct 11% (00:00) wrong based on 18 sessions
$$7a + 8 = 8a - 24$$

 Quantity A Quantity B a 24

A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.

Drill 1
Question: 5
Page: 493-494
[Reveal] Spoiler: OA

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Sandy
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GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4810
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 118

Kudos [?]: 1897 [0], given: 397

Re: 7a + 8 = 8a − 24 [#permalink]  04 Mar 2018, 14:08
Expert's post
Explanation

To solve this single-variable equation, you’ll just need to isolate the variable. First, add 24 to both sides to yield 7a + 32 = 8a.

Then subtract 7a from both sides to yield 32 = a. Quantity A is greater.
_________________

Sandy
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Intern
Joined: 28 Feb 2018
Posts: 30
Followers: 0

Kudos [?]: 2 [0], given: 0

Re: 7a + 8 = 8a − 24 [#permalink]  11 Mar 2018, 07:06
a=32 hence the answer is A
Re: 7a + 8 = 8a − 24   [#permalink] 11 Mar 2018, 07:06
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# 7a + 8 = 8a − 24

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