Question

x - 2y = 4\\2x - y = -1

Explanation:

Step1: Isolate x from first equation

$x = 4 + 2y$

Step2: Substitute x into second equation

$2(4 + 2y) - y = -1$

Step3: Simplify to solve for y

$8 + 4y - y = -1$
$3y = -9$
$y = -3$

Step4: Substitute y back to find x

$x = 4 + 2(-3) = 4 - 6 = -2$

Answer:

$x=-2$, $y=-3$