Solved

Solve the System by the Addition Method $x + y = - 1$

Question 117

Multiple Choice

Solve the system by the addition method.
- $x + y = - 1$ $x - y = 14$

A) $\{ ( 6.5 , - 7.5 ) \}$
B) $\{ ( 6.5,7.5 ) \}$
C) $\{ ( 1 , - 7.5 ) \}$
D) $\{ ( 1,6.5 ) \}$

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