Question

Elimination method help? What is the value of the x variable in the solution to the following system of equations?
2x + 3y = 4
x - 2y = -5
I came up with 7, but I think I'm wrong.

Answer 1

using the process of gaussian elimination u can create a augmented matrix of\[\left[\begin{matrix}2 & 3 & 4\\ 1 & -2 & -5\end{matrix}\right]\]

Answer 2

and solve for x u will get x1 = -1 and y = 2

Answer 3

Oh, that makes sense. :)