, not .
Problem: Find the point of intersection of the lines and .
Solve the system using elementary row operations on the equations or on the augmented matrix.
I'm doing something wrong here, and I don't know what. Can someone help?
R1 = row 1
R2 = row 2
-3*R1 + R2
I get and , but plugging them into the 1st equation doesn't work.