(3; - 1) x + z = 4xy x + (y - 3) - 5 = 0

To solve the system of equations, let's first solve the second equation for y:

x + (y - 3) - 5 = 0 y - 3 = -x + 5 y = -x + 5 + 3 y = -x + 8

Now substitute this expression for y into the first equation:

x + z = 4xy x + z = 4x(-x + 8) x + z = -4x^2 + 32x

Since we have two variables (x and z), we need at least one more equation to solve this system. Without another equation, we cannot determine specific values for x and z.

Please provide any additional information or equations you have, and I will be happy to assist you further.