Re: Stuck on another problem

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#52

From: Patrick
Date: Wed, 11 Nov 1998 00:00

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First isolate a variable in one of the equations, for this example I chose
to isolate x from the first equation.
1)    x=z-y
Isolate a second variable from a second equation.
2)    y=6-z-3x
Substitute the value for x in 1) into 2), giving you:
3)    y=-3+2z
Isolate the same variable y in the third equation
4)    y=x+2z-5
Substitute 1) into 4) giving:
5)    y=(3z-5)/2
Now since 3) and 5) are both equal to y, they are also equal
6)    -3+2z=(3z-5)/2
Isolate z and you should get
z=1
Plug that in to the equations of your choice to get x and y
x=2
y=-1

There you go.

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From: "Patrick" <cmpeng@escape.ca>
Subject: Re: Stuck on another problem
Date: 1998/11/11
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