Question 524127
The equations are:
-2x + y = 6
 4x - 2y = 5 
we will use the 1st equation for substitution, add 2x to both sides and we have:
y = 2x + 6
:
Replace y in the 2nd equation with (2x+6)
4x - 2(2x+6) = 5
4x - 4x - 12 = 5
0 = 5 + 12
0 = 17; obviously this is not a solvable problem, no solution is the answer