Homework Help: Algebra Question

Posted by mike on Saturday, December 19, 2009 at 4:23pm.

I need to solve the system of equations letting z be the parameter

7x+y+7z=-12
-3x+4y+6z=-1

This is suppose to be the right answer
{-47/31-22/31z-43/31-63/31z,z}

I keep getting
{-22/31-47-31z-63/31-43/31z,z}

Algebra Question - bobpursley, Saturday, December 19, 2009 at 4:27pm
7x+y+7z=-12
-3x+4y+6z=-1

28x+4y+28z=-48
-3x+4y+6z=-1
subtract bottom eq
31x-22z=-47
x= -47/31 +22/31 z

You can do the x.
Algebra Question - delonte, Saturday, July 9, 2011 at 1:03pm
7x+4y=-16
6x-4y=-36

Answer this Question

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