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OpenStudy (anonymous):
For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? −x + 2y = 9 4x + 5y = 9 −9 + 2y −9 − 2y 9 − 2y 9 + 2y
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OpenStudy (cwrw238):
x = 2y - 9
OpenStudy (cwrw238):
= -9 + 2y your first option
OpenStudy (anonymous):
thanks!
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