Solve the System of Equations by the Addition Method $\left\{ \begin{array} { l } x + y = 23 \\x - y = 15\end{array} \right.$

question 112

Multiple Choice

Solve the system of equations by the addition method.
- $\left\{ \begin{array} { l } x + y = 23 \\x - y = 15\end{array} \right.$

• A) no solution
• B) \(( 19,4 )\)
• C) \(( 4,19 )\)
• D) \(\left( \frac { 23 } { 2 } , \frac { 15 } { 2 } \right)\)

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