Question

How I solve the following Linear system?
2x -y + 2z = -1
x + y + z = 4
3x - y + z = -4

Answer 1

Very painfully....

Answer 2

I m lost bro

Answer 3

Subtract equation #1 and 2 times equation #2.
Subtract equation #3 and equation #2.

You will now get two equations in x and y. Solve these two equations to get x and y. Then, substitute back in one of them to find z.

Answer 4

I will try