Use back-substitution to solve the system of linear equations. $$\left\{ \begin{array} { r }
- x + 7 y - 5 z = 51 \
5 y - 8 z = 82 \
z = - 9
\end{array} \right.$$
A) $( 2,8 , - 9 )$
B) $( 8,2 , - 9 )$
C) $( 8 , - 9,2 )$
D) $( - 9,2,8 )$
E) $( 0,2 , - 9 )$

Question

Use back-substitution to solve the system of linear equations. $$\left\{ \begin{array} { r } 
- x + 7 y - 5 z = 51 \
5 y - 8 z = 82 \
z = - 9
\end{array} \right.$$
A) $( 2,8 , - 9 )$
B) $( 8,2 , - 9 )$
C) $( 8 , - 9,2 )$
D) $( - 9,2,8 )$
E) $( 0,2 , - 9 )$

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The Answer of Use back-substitution to solve the system of linear equations. $$\left\{ \begin{array} { r } 
- x + 7 y - 5 z = 51 \
5 y - 8 z = 82 \
z = - 9
\end{array} \right.$$
A) $( 2,8 , - 9 )$
B) $( 8,2 , - 9 )$
C) $( 8 , - 9,2 )$
D) $( - 9,2,8 )$
E) $( 0,2 , - 9 )$

Use Back-Substitution to Solve the System of Linear Equations {−x+7y−5z=515y−8z=82z=−9\left\{ \begin{array} { r } - x + 7 y - 5 z = 51 \\5 y - 8 z = 82 \\z = - 9\end{array} \right.⎩⎨⎧​−x+7y−5z=515y−8z=82z=−9​

Use Back-Substitution to Solve the System of Linear Equations $\left\{ \begin{array} { r } - x + 7 y - 5 z = 51 \\5 y - 8 z = 82 \\z = - 9\end{array} \right.$