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

Question 117

Multiple Choice

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


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

Correct Answer:

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