Use matrices to solve the system of equations (if possible).Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. $$\left\{ \begin{aligned}
7 x - 6 y & = - 40 \
- 5 x + 7 y & = 34
\end{aligned} \right.$$
A)x = 4, y = -2
B)x = -4, y = 2
C)x = 2, y = -4
D)x = 2, y = 4
E)no solution

Question

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The Answer of Use matrices to solve the system of equations (if possible).Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. $$\left\{ \begin{aligned}
7 x - 6 y & = - 40 \
- 5 x + 7 y & = 34
\end{aligned} \right.$$
A)x = 4, y = -2
B)x = -4, y = 2
C)x = 2, y = -4
D)x = 2, y = 4
E)no solution

Use Matrices to Solve the System of Equations (If Possible) {7x−6y=−40−5x+7y=34\left\{ \begin{aligned}7 x - 6 y & = - 40 \\- 5 x + 7 y & = 34\end{aligned} \right.{7x−6y−5x+7y​=−40=34​

Use Matrices to Solve the System of Equations (If Possible) $\left\{ \begin{aligned}7 x - 6 y & = - 40 \\- 5 x + 7 y & = 34\end{aligned} \right.$