Question

2x - y = -2\
4x + y = 20\
\overline{\quad\quad\quad\quad\quad\quad}\
6x = 18

Explanation:

Step1: Solve for $x$

Divide both sides by 6:
$\frac{6x}{6} = \frac{18}{6}$

Step2: Substitute $x$ into first equation

Substitute $x=3$ into $2x - y = -2$:
$2(3) - y = -2$

Step3: Isolate and solve for $y$

Simplify and rearrange:
$6 - y = -2 \implies -y = -8 \implies y = 8$

Answer:

$x=3$, $y=8$