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When solving the system x + 2y = 9 and x  y = 6, which expression could be substituted for x in the second equation?
A. 9  x
B. y  9/2
C. 9  2y
D. 1/2 y + 9
 2 years ago
 2 years ago
When solving the system x + 2y = 9 and x  y = 6, which expression could be substituted for x in the second equation? A. 9  x B. y  9/2 C. 9  2y D. 1/2 y + 9
 2 years ago
 2 years ago

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neverforgetvivisteeBest ResponseYou've already chosen the best response.1
well first you have to get x to equal something in the first equation, we can do that by subtracting 2y from both sides to get the x alone. it should look like x=92y so C is your answer
 2 years ago
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