4x+2y=1 y=-2x+5 Solve by substitution x y ( ) I got x=1/2?

ted s2017-10-09T20:15:51Z

sorry , x = 1 / 2 ===> y = 4 but 4(1/2) + 2(4) ╪ 1....there is NO solution as these describe parallel lines

DWRead2017-10-09T20:14:41Z

4x + 2y = 1

y = -2x+5
2x + y = 5
4x + 2y = 10, which contradicts the first equation.
No solution.

?2017-10-09T20:13:12Z

The first equation can be rearranged to
y = -2*x + (1/2)
That's inconsistent with the second equation; there are no solutions.

alex2017-10-09T20:10:16Z

4x+2(-2x+5)=1 --->no solution