Solve for the x -coordinate of the solution of the following system. $\left\{ \begin{array} { l }
x + 2 y - z = 0 \
x - 4 y + z = - 8 \
x + 4 y - 2 z = 5
\end{array} \right.$
A) x=-5
B) x=5
C) x=4
D) x=-4

Question

Solve for the x -coordinate of the solution of the following system. $\left\{ \begin{array} { l } 
x + 2 y - z = 0 \
x - 4 y + z = - 8 \
x + 4 y - 2 z = 5
\end{array} \right.$
A) x=-5
B) x=5
C) x=4
D) x=-4

Quizplus · Accepted Answer

By solving the system of equations using elimination or substitution, we find that the x-coordinate of the solution is x = -5.

Solve for the X -Coordinate of the Solution of the Following