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If a+ b = 0, then b – 2a =

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Carcass
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If a+ b = 0, then b – 2a = [#permalink] New post   Updated on: 16 Jul 2021, 11:26
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If a + b = 0, then b – 2a =

A. 3a
B. 2a
C. 0
D. 2b
E. 3b


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Official Answer
E

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.
Edited the question as |a| was redundant in the question
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Re: If a+ b = 0, then b – 2a = [#permalink] New post   02 Jan 2021, 08:20
1
a+b = 0

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] New post   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!
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Re: If a+ b = 0, then b – 2a = [#permalink]
16 Jul 2021, 10:42
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