Question

Solve the equations :
$2x-y=2$
$4x-y=4$

Answer 1

Given equations: $2x-y=2$ ........(1)

$4x-y=4$ ........(2)

Subtracting equation (1) from equation (2), we get,
$4x-y-2x+y=4-2$

$2x=2$

$\therefore x=1$

Put $x=1$ in $\left(1\right)$ w get
$2\left(1\right)-y=2$
$\Rightarrow 2-y=2$
$y=2-2$

Therefore, $y=0$