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July 30, 2014

July 30, 2014

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

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 4:27pm7x+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 1:03pm7x+4y=-16

6x-4y=-36

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