college math
posted 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}

college math 
Steve
2 equations
4 unknowns
no single solution. 
college math 
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 
college math 
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
5x10y+10z15w = 20
11y9z+16w = 15
so your answer looks good to me. 
college math 
Cece
so are you saying that "x" is 15?

college math 
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?
Respond to this Question
Similar Questions

College Algebra
Solve the system of equations with ROWOPS program. I know how to do the first step but after that it gets difficult for me, this is the system of equations: 3x + y  z = 1 x + 2y  z = 0 2x  y + z = 4 I used to be able to do these … 
math
Solve following system of equations? x+3z=2 2x+2y+z=4 3x+y2z=5 i need help with few so i can get hang of this math plz. Perform row operations write new matrix [132 312 211 073] R1+R2 using x,yand z variables write system linear 
College Algebra
Solve the system of equations using matrices. If system has no solution say its inconsistent. 6x + y = 5 3x  y + z  w = 8 z + w = 2 Solve the system of equations using Cramers Rule if applicable. 4x + 2y = 8/5 5x  5y = 5 
Discrete Math
I am really stuck on these problems. I've worked a lot of them but I can't get these. Sometimes I think I know the answer but I can't show how I got it. 1.) Solve each matrix equation for X. 2X + 5A = B 2.) Find the following matrices: … 
College Algebra
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule. 
Math
Please help! x2y+z=7 2x+yz=0 3x+2y2z=2 a. Solve the above system of equations using Gaussian Elimination or GaussJordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule. 
Pre Calculas
7. For the function defined by: f(x)= {x^2, x<=1} {2x+1, x>1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3xy=0 5x+2y=22 9. Solve the … 
Math  system of eqns
Consider the system of equations: x1 + x2 + x3 = 6, −x1 − 2x2 + 3x3 = 1, 3x1 − 4x2 + 4x3 = 5. (a) Write down the augmented matrix for this system (b) Use elementary row operations to reduced the augmented matrix to … 
Matrices
Solve the system using matrices. Show all the row operations that you use. 3x9y=30 2x+5y= 2 
Math
Solve the following system of equations by using matrices. x2y=6 2yz=1 x+3z=7