Simplify Complex Rational Expressions
-$$\begin{array} { l }
2 x + 6 y + 9 z = 66 \
7 x + 6 y + 8 z = 77 \
9 x + 8 y - 2 z = 51
\end{array}$$
A)
$\left[ \begin{array} { r r r | r } 2 & 6 & 9 & 66 \ 7 & 6 & 8 & 77 \ 9 & 8 & - 2 & 51 \end{array} \right]$

B)

$\left[ \begin{array} { r r r | r } 2 & 7 & 9 & 66 \ 6 & 6 & 8 & 77 \ 9 & 8 & - 2 & 51 \end{array} \right]$
C)
$\left[\begin{array}{rrr|r}
66 & 9 & 6 & 2 \
77 & 8 & 6 & 7 \
51 & -2 & 8 & 9
\end{array}\right]$

D)
$\left[\begin{array}{rrr}
2 & 6 & 9 \
7 & 6 & 8 \
9 & 8 & -2
\end{array}\right]$

Question

Simplify Complex Rational Expressions
-$$\begin{array} { l } 
2 x + 6 y + 9 z = 66 \
7 x + 6 y + 8 z = 77 \
9 x + 8 y - 2 z = 51
\end{array}$$
A)
$\left[ \begin{array} { r r r | r } 2 & 6 & 9 & 66 \ 7 & 6 & 8 & 77 \ 9 & 8 & - 2 & 51 \end{array} \right]$

B)

$\left[ \begin{array} { r r r | r } 2 & 7 & 9 & 66 \ 6 & 6 & 8 & 77 \ 9 & 8 & - 2 & 51 \end{array} \right]$
C)
$\left[\begin{array}{rrr|r}
66 & 9 & 6 & 2 \
77 & 8 & 6 & 7 \
51 & -2 & 8 & 9
\end{array}\right]$

D)
$\left[\begin{array}{rrr}
2 & 6 & 9 \
7 & 6 & 8 \
9 & 8 & -2
\end{array}\right]$

Quizplus · Accepted Answer

The correct choice is A because it directly translates the given system of equations into an augmented matrix form, aligning the coefficients of $x$, $y$, and $z$ with their respective constants on the right side of the bar.

Simplify Complex Rational Expressions - 2x+6y+9z=667x+6y+8z=779x+8y−2z=51\begin{array} { l } 2 x + 6 y + 9 z = 66 \\7 x + 6 y + 8 z = 77 \\9 x + 8 y - 2 z = 51\end{array}2x+6y+9z=667x+6y+8z=779x+8y−2z=51​

Simplify Complex Rational Expressions
- $\begin{array} { l } 2 x + 6 y + 9 z = 66 \\7 x + 6 y + 8 z = 77 \\9 x + 8 y - 2 z = 51\end{array}$