Solve the system. x - z = -73x - y= -1 x + y + z = 18
A. (-1, 7, 9)
B. (-1, -2, 6)
C. (2, 3, 9)
D. (2, 7, 9)
Answer: D
Mathematics
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+ C
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2.
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Fill in the blank(s) with the appropriate word(s).
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Mathematics