P.S.

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vladmire: Master | Next Rank: 500 Posts; Posts: 132; Joined: Tue Oct 07, 2008 4:59 pm; Thanked: 4 times

by vladmire » Sun Feb 01, 2009 5:31 pm

If I have a problem such as 6z+7/4z+1=3z+8/2z-4.
How do I solve for the variable can I cross multiply terms and then simplify or is there a better method?

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Source: Beat The GMAT — Problem Solving | Sun Feb 01, 2009 5:31 pm

El Cucu: Master | Next Rank: 500 Posts; Posts: 236; Joined: Fri Nov 28, 2008 9:16 am; Thanked: 9 times

Re: P.S.

by El Cucu » Mon Feb 02, 2009 5:45 am

vladmire wrote:If I have a problem such as 6z+7/4z+1=3z+8/2z-4.
How do I solve for the variable can I cross multiply terms and then simplify or is there a better method?

Cross multiply z=-4/5

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