Solve the System Using Gaussian Elimination $( x , y )$

question 22

Multiple Choice

Solve the system using Gaussian elimination. If $( x , y )$ is the solution to the system, give the value of $2 x - y$ .
$$\left\{ \begin{array} { c } x + y = 24 \\x - 2 y = - 3\end{array} \right.$$

• A) \(\quad 19\)
• B) \(\quad 20\)
• C) 21
• D) 24
• E) \(\quad 18\)

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