Solve the system by using the inverse of the coefficient matrix.
-$$\begin{aligned}
x + 3 y & = - 8 \
21 x + 6 y & = 3
\end{aligned}$$
A) $\{ ( - 3,1 ) \}$
B) $\{ ( 1 , - 3 ) \}$
C) $\{ ( - 1,3 ) \}$
D) $\{ ( 3 , - 1 ) \}$

Question

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The Answer of Solve the system by using the inverse of the coefficient matrix.
-$$\begin{aligned}
x + 3 y & = - 8 \
21 x + 6 y & = 3
\end{aligned}$$
A) $\{ ( - 3,1 ) \}$
B) $\{ ( 1 , - 3 ) \}$
C) $\{ ( - 1,3 ) \}$
D) $\{ ( 3 , - 1 ) \}$

Solve the System by Using the Inverse of the Coefficient x+3y=−821x+6y=3\begin{aligned}x + 3 y & = - 8 \\21 x + 6 y & = 3\end{aligned}x+3y21x+6y​=−8=3​

Solve the System by Using the Inverse of the Coefficient $\begin{aligned}x + 3 y & = - 8 \\21 x + 6 y & = 3\end{aligned}$