Posted by **Anonymous** on Friday, January 28, 2011 at 7:51pm.

w+x+y+z=2

2w-x-y+2z=7

2w+3x+2y-z=-2

3w-2x-y-3z=-2

solve for w, x, y, z

- math -
**drwls**, Friday, January 28, 2011 at 8:14pm
No.

Eliminate variables one at a time, or use Kramer's method of determinants.

Here is how to get rid of x. Add the first two equations.

3w + 3z = 9 or

w + z = 3

Multiply the third equation by 2 and the fourth equation by 3, and add.

4w + 6x + 4y - 2z = -4

9w - 6x - 3y - 9z = -6

13w -y - 11z = -10

Continue in that manner until you are left with the value of one of the variables.

## Answer This Question

## Related Questions

- Math - We have an important chemsitry test due and I want to make sure that I do...
- English - 1. He can not solve the math problem. 2. He cannot solve the math ...
- MATH PLEASEEEEE - I have a question, if f(x)=x/2 and g(x)=3x+1 find: a) (f+g)(x...
- math - actually, in a addition to the question i posted a few minutes ago, can ...
- English - I'm worried about my math. 1. Why don't you buy a math self- teaching ...
- Math - Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by ...
- MATH PLEASE HELP! - Solve each system 3x+2y= -2 9x- y= -6 I know how to solve ...
- Math - Solve for S: r^2s-5s=7. Solve for b: L= 4a^2b. I'm confused about how to ...
- Alebra - Solve 5m - 8 > 12 Solve 12 - 3a > 18 Solve 5m - 4 < 2m + 11 ...
- math - solve for the indicated variable: a. temperature formula solve for F: K=5...

More Related Questions