solve each given linear system by the method of elimination

2x-3y+4z=-12

x-2y+z=-5

3x+y+2z=1

 

How to solve this problem. What should I do first?

To make a long story short, click here, for help from wikipedia.

 

There are other methods (here, again wikipedia) which do essentially the same.

solve each given linear system by the method of elimination

2x-3y+4z=-12

x-2y+z=-5

3x+y+2z=1

 

How to solve this problem. What should I do first?

 

at first, it seems really complicated

but once you get it , you will know it forever

 

so anyways

keep in mind that if you have 3 unknown variables you need 3 equations to solve it. Which you have right now

Method of elimination is solving the unknown by eliminating the unnecessary variables

For example, if you want to find x, you will need to eliminate y and z

When i mean by eliminating , it is like making them 0

3-3 is zero rite?

so is 3x-3x = 0