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If L = (a - b)-c and R =a - (b - c), then L - R =

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Carcass

Verbal Expert

Joined: 18 Apr 2015

Posts: 16587

GRE 1: Q160 V160

If L = (a - b)-c and R =a - (b - c), then L - R = [#permalink]

04 Aug 2018, 10:43

Expert Reply

00:00

Question Stats:

78% (00:34) correct

21% (00:46) wrong

based on 28 sessions

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If \(L = (a - b)- c\) and \(R = a - (b - c)\), then \(L - R =\)

(A) 2b

(B) 2c

(C) 0

(D) -2b

(E) -2c

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GreenlightTestPrep

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Joined: 10 Apr 2015

Posts: 4573

Re: If L = (a - b)-c and R =a - (b - c), then L - R = [#permalink]

04 Aug 2018, 17:11

Expert Reply

Carcass wrote:

If \(L = (a - b)- c\) and \(R = a - (b - c)\), then \(L - R =\)

(A) 2b

(B) 2c

(C) 0

(D) -2b

(E) -2c

Given: L = (a - b)- c
Simplify to get: L = a - b - c

Given: R = a - (b - c)
R = a - b + c

So, L - R = (a - b - c) - (a - b + c)
= a - b - c - a + b - c
= -2c

Answer: E

Cheers,
Brent
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