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# Mary is reviewing her algebra quiz. She has determined that one of her

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Math Expert
Joined: 02 Sep 2009
Posts: 64248
Mary is reviewing her algebra quiz. She has determined that one of her  [#permalink]

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29 Jul 2019, 05:07
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Difficulty:

35% (medium)

Question Stats:

69% (01:16) correct 31% (00:56) wrong based on 61 sessions

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Mary is reviewing her algebra quiz. She has determined that one of her solutions is incorrect. Which one is it?

A. 2x + 5(x - 1) = 9, x = 2
B. p - 3(p - 5) = 10, p = 2.5
C. 4y + 3 y = 28, y = 4
D. 5w + 6w - 3w = 64, w = 8
E. t - 2t - 3t = 32, t = 8

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Re: Mary is reviewing her algebra quiz. She has determined that one of her  [#permalink]

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29 Jul 2019, 08:21
Bunuel wrote:
Mary is reviewing her algebra quiz. She has determined that one of her solutions is incorrect. Which one is it?

A. 2x + 5(x - 1) = 9, x = 2
B. p - 3(p - 5) = 10, p = 2.5
C. 4y + 3 y = 28, y = 4
D. 5w + 6w - 3w = 64, w = 8
E. t - 2t - 3t = 32, t = 8

E will result in a negative value. If you are willing to calculate,
8-16-24 results in -32. IMO E
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Re: Mary is reviewing her algebra quiz. She has determined that one of her  [#permalink]

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06 Aug 2019, 16:59
Bunuel wrote:
Mary is reviewing her algebra quiz. She has determined that one of her solutions is incorrect. Which one is it?

A. 2x + 5(x - 1) = 9, x = 2
B. p - 3(p - 5) = 10, p = 2.5
C. 4y + 3 y = 28, y = 4
D. 5w + 6w - 3w = 64, w = 8
E. t - 2t - 3t = 32, t = 8

E is incorrect.

t - 2t - 3t = 32

-4t = 32

t = -8

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Re: Mary is reviewing her algebra quiz. She has determined that one of her   [#permalink] 06 Aug 2019, 16:59