x= 1.5
4x -2=4 <<< Original problem
+2 +2 <<< reverse operations (problem requires subtraction, so add to solve)
4x=6 <<< New problem
4x/4=6/4 <<<reverse operations (new problem requires multiplication, so divide to solve)
x=1.5 <<< answer
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-4. x=2
For x = -4 2x2 + x = 2 (-4)2 + (-4) = 32 - 4 = 28
4
y=8 y = 2x y = 2(4) <-- substitute 4 for x y = 8 <-- this is your answer
The value of x is 11/2