Solve each system.

x + y + z = 4

x - y + z = 2

x - y - z = 0

Which one should I use to take out?

2 posts
• Page **1** of **1**

Solve each system.

x + y + z = 4

x - y + z = 2

x - y - z = 0

Which one should I use to take out?

x + y + z = 4

x - y + z = 2

x - y - z = 0

Which one should I use to take out?

- bellerum23
**Posts:**16**Joined:**Thu Oct 24, 2013 5:13 pm

bellerum23 wrote:Solve each system.

x + y + z = 4

x - y + z = 2

x - y - z = 0

Which one should I use to take out?

it doesnt matter. you get to choose. but maybe start w/ subtracting the 1st 2 to get the soln for y. & you can add the last 2 to get 2x-2y=2 so x-y=1. then back-solve to get x. then get z w/ any of the eqns.

but theres lots of other ways to solve it & those are just as good!

- buddy
**Posts:**144**Joined:**Sun Feb 22, 2009 10:05 pm

2 posts
• Page **1** of **1**