Question

slove equation by using Cramer's rule

x+2y-z= 1 ​

Answer 1

Answer:

In linear algebra, Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, valid whenever the system has a unique solution.

to solve the problem, we need two more equations. so, the question is invalid.

Step-by-step explanation:

Let's use the following system of equations:

2x + y + z = 3

x – y – z = 0

x + 2y + z = 0

coefficient matrix's determinant for the above equation will be:

2 1 1

D = 1 -1 -1

1 2 1