Solve the system of linear equations. $$\left\{ \begin{array} { l }
x + y + z = 0 \
3 x + 5 y + 4 z = 9 \
3 x + 6 y + 5 z = 6
\end{array} \right.$$
A) $( 3,12 , - 15 )$
B) $( 3,12,15 )$
C) $( - 3 , - 12 , - 15 )$
D) $( 3 , - 12 , - 15 )$
E) $( - 3,12 , - 15 )$

Question

Solve the system of linear equations.​ $$\left\{ \begin{array} { l } 
x + y + z = 0 \
3 x + 5 y + 4 z = 9 \
3 x + 6 y + 5 z = 6
\end{array} \right.$$ ​
A)​ $( 3,12 , - 15 )$
B)​ $( 3,12,15 )$
C)​ $( - 3 , - 12 , - 15 )$
D)​ $( 3 , - 12 , - 15 )$
E)​ $( - 3,12 , - 15 )$

Quizplus · Accepted Answer

Explanation:The correct answer is A because the system of linear equations has the solution $ ( 3,12 , - 15 ) $.

Solve the System of Linear Equations {x+y+z=03x+5y+4z=93x+6y+5z=6\left\{ \begin{array} { l } x + y + z = 0 \\3 x + 5 y + 4 z = 9 \\3 x + 6 y + 5 z = 6\end{array} \right.⎩⎨⎧​x+y+z=03x+5y+4z=93x+6y+5z=6​

Solve the System of Linear Equations $\left\{ \begin{array} { l } x + y + z = 0 \\3 x + 5 y + 4 z = 9 \\3 x + 6 y + 5 z = 6\end{array} \right.$