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OpenStudy (anonymous):
For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation? 2x + y = 9 −x − y = −8
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OpenStudy (anonymous):
x = 8 - y !
OpenStudy (anonymous):
It would make more sense to eliminate, but if you have to subsitute, x = 8-y Do you see why?
OpenStudy (anonymous):
Elimination would give you x=1 straight away.
OpenStudy (anonymous):
thnks
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