3x - 2y - 2z = -11
1x - 2y + 3z = -8
-7x + 6y + 1z = 38
2007-03-14 02:06:53 · 3 answers · asked by Rocstarr 2 in Education & Reference ➔ Homework Help
I need to get answers for x, y, and z
2007-03-14 02:16:15 · update #1
Here is the method to solve it.
use one of the equation to get the value of one unknown interms of 2 unknowns.
For example 2 can be easily solved for x.
x = 2y-3z-8.
Substitute this X in equation 1 and 3.
That is Eq. 1 will become 3(2y-3z-8)-2y-2z = -11
Simplifying this you have : 4y-7z=13.
Simplify equation 3 similarly.
Now you have 2 equations with 2 variables .
Solve them simultaneously and get the values of y and Z.
Substitute these in your X solution of x = 2y-3z-8 to get the value of X.
2007-03-14 02:29:12 · answer #1 · answered by geeklearn 2 · 0⤊ 0⤋
Use simultaneous equations
2007-03-14 09:13:55 · answer #2 · answered by yahooligan! 3 · 0⤊ 0⤋
You need to tell us which variable you are solving for
2007-03-14 09:14:45 · answer #3 · answered by Chrissy 5 · 0⤊ 0⤋