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Solve the System 5x−y+z=85 x - y + z = 8

Question 188

Multiple Choice

Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary.
- 5x−y+z=85 x - y + z = 8
7x+y+z=67 x + y + z = 6
12x+2z=1412 x + 2 z = 14


A) {(x,−x−1,−6x+7) }\{ ( x , - x - 1 , - 6 x + 7 ) \}
B) {(x,−x+1,6x−7) }\{ ( x , - x + 1,6 x - 7 ) \}
C) {(x,−x+1,6x+7) }\{ ( x , - x + 1,6 x + 7 ) \}
D) {(x,−x+1,−6x+7) }\{ ( x , - x + 1 , - 6 x + 7 ) \}

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