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SVP

Joined: 05 Jul 2006

Posts: 1568

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22 Oct 2006, 14:11

Solve for y

22-/y+14/=20

SVP

Joined: 01 May 2006

Posts: 1837

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22 Oct 2006, 14:18

22-|y+14|=20
<=> 22-20 = |y+14|
<=> |y+14|= 2
<=> y+14 = 2 or -(y+14) = 2
<=> y=-12 or y=-16

Intern

Joined: 05 Mar 2006

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22 Oct 2006, 16:51

Hey Fig,
In |y+14| should'nt it be just y which is unknown that could be either positive or negative instead of entire |y+14| being +ve or -ve. In other words the two equations should be

22-|y+14|=20

so |y+14|=2
or -y+14=2

or y+14=2

Is this correct or your version is correct. Pls explain.
Thanks

[#permalink] 22 Oct 2006, 16:51

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