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If 2a - 3b = 5 and 3a - 2b = 10, what is a - b?
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25 Nov 2021, 03:33
25 Nov 2021, 03:33
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Question Stats:
90% (01:22) correct
10% (00:44) wrong based on 10 sessions
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This question is part of the GRE - Skill Builder Project for a Q170
If 2a - 3b = 5 and 3a - 2b = 10, what is the value of a - b?
Show: ::
a-b=3
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Re: If 2a - 3b = 5 and 3a - 2b = 10, what is a - b?
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25 Nov 2021, 05:38
25 Nov 2021, 05:38
1
Carcass wrote:
This question is part of the GRE - Skill Builder Project for a Q170
If 2a - 3b = 5 and 3a - 2b = 10, what is the value of a - b?
Show: ::
a-b=3
Given:
2a - 3b = 5
3a - 2b = 10
Add the equations to get: (2a - 3b) + (3a - 2b) = 5 + 10
Simplify: 5a - 5b = 15
Divide both sides by 5 to get: a - b = 3
Answer: 3
gmatclubot
Re: If 2a - 3b = 5 and 3a - 2b = 10, what is a - b? [#permalink]
25 Nov 2021, 05:38
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