SOLUTION: I have no clue how to do matrices and I do not have a calculator in order to compute the equations any help would be great.
Solve any way you can:
2x – y + z = 8
x + 2y +
Algebra ->
Matrices-and-determiminant
-> SOLUTION: I have no clue how to do matrices and I do not have a calculator in order to compute the equations any help would be great.
Solve any way you can:
2x – y + z = 8
x + 2y +
Log On
You can put this solution on YOUR website! 2x – y + z = 8
x + 2y + z = -3
x - 2y – z = 7
------------------
x + 2y + z = -3
x - 2y – z = 7
---------------- Add
2x = 4
x = 2
------
-y + z = 4 eqn 1
-2y- z = 5 eqn 3
---------------- Add
-3y = 9
y = -3
--------
2 -2*(-3) - z = 7
8 - z = 7
z = 1
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You mentioned matrices, but I used elimination. The coefficients were too good to pass up.
