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OpenStudy (anonymous):
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
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razor99 (razor99):
i think its c
OpenStudy (vishal_kothari):
http://openstudy.com/code-of-conduct "Don’t post only answers - guide the asker to a solution.
OpenStudy (vishal_kothari):
|dw:1332247403638:dw|
OpenStudy (vishal_kothari):
it is shifting of y variable to rhs....
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