Use Cramer S Rule to Solve for X in the Following

question 49

Multiple Choice

Use Cramer s Rule to solve for x in the following system. $\left\{ \begin{array} { l } 2 x - 6 y = - 8 \\2 x + 2 y = 7\end{array} \right.$

• A) \(x = \frac { \left| \begin{array} { c c }
• 2 & - 8 \\
• 2 & 7
• \end{array} \right| } { \left| \begin{array} { c c }
• 2 & - 6 \\
• 2 & 2
• \end{array} \right| }\)
• B) \(x = \frac { \left| \begin{array} { c c }
• 2 & - 6 \\
• 2 & 2
• \end{array} \right| } { \left| \begin{array} { c c }
• - 8 & - 6 \\
• 7 & 2
• \end{array} \right| }\)
• C) \(x = \frac { \left| \begin{array} { c c }
• - 8 & - 6 \\
• 7 & 2
• \end{array} \right| } { \left| \begin{array} { c c }
• 2 & - 6 \\
• 2 & 2
• \end{array} \right| }\)
• D) none of these

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