Asked by Cece

system of equations:

solve the following system of operations using matrices (row operations)

{5x + y + z + w = -5}
{x - 2y + 2z -3w = -4}
Answered by Steve
2 equations
4 unknowns

no single solution.
Answered by Cece
I need more than that. What are the values of "x"

I worked out the values of "y" to be:
y = (15/11) + (9/11z) - (16/11w), but I could be wrong
Answered by Steve
oh, well, if that's the kind of solution you want, then it's ok.

Eliminating x, I get

5x+y+z+w = -5
5x-10y+10z-15w = -20

11y-9z+16w = 15
so your answer looks good to me.
Answered by Cece
so are you saying that "x" is 15?
Answered by Steve
No. I used your answer and showed that no matter what x,z,w are, the expression you got will work for y. We eliminated x, remember?
There are no AI answers yet. The ability to request AI answers is coming soon!