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OpenStudy (anonymous):
When solving the system x+2y=9 and x-y=6 by substitution, what can be substituted for x in the second equation? 9-y 1/2y+9 9-2y 9-y/2
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OpenStudy (kagıtucak):
In the first equation we have x+2y=9 When we left x alone we get x=9-2y so we can substitude 9-2y for x in the second equation
OpenStudy (anonymous):
thank you
OpenStudy (kagıtucak):
you're welcome
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