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If a+ b = 0, then b – 2a =
[#permalink]
Updated on: 16 Jul 2021, 11:26
Updated on: 16 Jul 2021, 11:26
Expert Reply
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Question Stats:
63% (00:50) correct
36% (00:40) wrong based on 11 sessions
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If a + b = 0, then b – 2a =
A. 3a
B. 2a
C. 0
D. 2b
E. 3b
Kudos for the right answer and explanation
A. 3a
B. 2a
C. 0
D. 2b
E. 3b
Kudos for the right answer and explanation
Originally posted by Carcass on 02 Jan 2021, 02:39.
Last edited by BrushMyQuant on 16 Jul 2021, 11:26, edited 2 times in total.
Last edited by BrushMyQuant on 16 Jul 2021, 11:26, edited 2 times in total.
Edited the question as |a| was redundant in the question
Re: If a+ b = 0, then b – 2a =
[#permalink]
02 Jan 2021, 08:20
02 Jan 2021, 08:20
1
a+b = 0
a = -b
b-2a = b -2(-b) = b + 2b = 3b
Answer E
a = -b
b-2a = b -2(-b) = b + 2b = 3b
Answer E
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Re: If a+ b = 0, then b – 2a =
[#permalink]
16 Jul 2021, 10:42
16 Jul 2021, 10:42
1
a + b = 0
=> a = -b
=> b-2a = b - 2*(-b) = b + 2b = 3b
So, answer will be E
Hope it helps!
=> a = -b
=> b-2a = b - 2*(-b) = b + 2b = 3b
So, answer will be E
Hope it helps!
