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

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Joined: 02 Sep 2009
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If L = (a - b) - c and R = a - (b - c), then L - R =  [#permalink]

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07 Aug 2018, 03:17
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Difficulty:

15% (low)

Question Stats:

74% (00:32) correct 26% (00:50) wrong based on 47 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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Re: If L = (a - b) - c and R = a - (b - c), then L - R =  [#permalink]

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07 Aug 2018, 04:28
L = a - b - c
R = a - b + c
-R = -a + b - c

Hence, L - R = a - b - c - a + b - c = -2c

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

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07 Aug 2018, 04:35
L-R= a-b-c-a+b-c=-2c

So correct answer is option E.

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

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07 Aug 2018, 05:58
L = (a - b)- c = a - b - c
R = a - (b - c) = a - b + c

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

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

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07 Aug 2018, 06:05
Bunuel wrote:
If $$L = (a - b)- c$$ and $$R = a - (b - c)$$, then $$L - R =$$

(A) 2b

(B) 2c

(C) 0

(D) -2b

(E) -2c

$$L = a - b - c$$

$$R = a - b + c$$

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

Or, $$L - R = a - b - c - a + b - c$$

Or, $$L - R = - 2c$$, Answer must be (E)
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Re: If L = (a - b) - c and R = a - (b - c), then L - R =  [#permalink]

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09 Aug 2018, 02:59
L=a−b−c

R=a−b+c

So,
L−R=(a−b−c)−(a−b+c)

Or,
L−R=a−b−c−a+b−c

Or,
L−R=−2c
Re: If L = (a - b) - c and R = a - (b - c), then L - R = &nbs [#permalink] 09 Aug 2018, 02:59
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# If L = (a - b) - c and R = a - (b - c), then L - R =

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