Question 507253
Substitute y=x-1 at 2x+y=5 and get:2x+x-1=5 => 3x=6 => x=2. Plug x=2 into y=x-1, and get y=2-1 => y=1 The solution of the system is (2, 1) See the graphic solution:

{{{graph(300, 300, -5, 5, -5, 7, x-1, 5-2x)}}}