1212What is the x value of the solution to the system

To solve the system by eliminating y, multiply the first equation, $2x – y = –5$, by 4 to obtain $8x – 4y = –20$. Next, add the second equation, $x + 4y = 11$, to the transformed equation and then solve the resulting equation for $x$.
$8x − 4y = −20$
$x + 4y = 11$
$9x + 0 = −9$
$9x = −9$
$\frac{\mathrm{9x} }{\mathrm{9}} =\frac{\mathrm{-9} }{\mathrm{9} }$
$x = -1$