Friday

November 28, 2014

November 28, 2014

Posted by **anonymous** on Saturday, October 11, 2008 at 2:38pm.

6x-6y-4z=-10

-5z+4y-z=-12

2x+3y-2z=9

- math -
**drwls**, Saturday, October 11, 2008 at 6:00pmMultiply the last equation (both sides) by 2. That gives you

4x + 6y - 4z = 18

Add that to

6x - 6y - 4z = -10

That gives you

10x -8z = 8

So far, we have eliminated the variable y.

Use similar tricks to get rid of x or z.

I believe your second equation is typed incorrectly. Did you mean

-5x +4y -z = -12?

**Answer this Question**

**Related Questions**

Math Homework - Hello! I need help with these math questions, thanks! :) 1.) ...

algebra - i need help with these problems (either a solution or how to plug them...

Math - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of ...

algebra URGENT! - Solve the system using elimination. 2x – 2y = –8 x + 2y = –1 ...

College Algebra - Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above ...

Math - Use elimination to solve each system of equations. x+y-2z=10 8x-9y-z=5 3x...

Math - Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by ...

algebra 2 - Nonlinear systems Solve the system by elimination. y=x^2+2 -4x-y=10 ...

algebra 2 - Nonlinear homework... Solve the system by elimination. 1)y=x^2+2 -4x...

math - solve each system by elimination x+y=10 x-y=2