Solve the System by Substitution $$\begin{array} { l } x + y = - 2 \\x - y = - 8\end{array}$$

question 279

Multiple Choice

Solve the system by substitution.
- $$\begin{array} { l } x + y = - 2 \\x - y = - 8\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( - 6,4 ) \}\)
• C) \(\{ ( 5,4 ) \}\)
• D) \(\{ ( - 5,3 ) \}\)

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