Algebra Math Help

Algebra 2 help? Solving Linear Systems Algebraically (using Substitution)?

I missed the session today and i am stuck learning this section on my own, but to my dismay.. i have no idea what i’m doing. I have tried friends and those online tutors but so far,nothing is helping me figure this out..how do i solve the system on equations with substitution? this is my equation:
-2x+y=6
4x-2y=5

-2x+y = 6; 4x-2y = 5;

1 -1/2 3
0 0 -17
inconsistent – no solutions.

Algebra I Help: Linear Equations in one Variable Part II