Question 14
Find the value of $x$ in the system of equations.
$\begin{cases}2x+y+z=-6\\x-y+2z=-6\\x+3y+z=5\end{cases}$
$\begin{cases}2x+y+z=-6\\x-y+2z=-6\\x+3y+z=5\end{cases}$
BBB 2022 - Senior Secondary - Preliminary Round Question 14
BBB · BBB 2022 - Senior Secondary - Preliminary Round