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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
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OpenStudy (anonymous):
−x + 2y = 9 =>x=2y-9 4x + 5y = 9 => 4(2y-9)+5y=9 =>8y-36+5y=9 =>13y=45 y=45/13 find x by substituting y value in x
OpenStudy (anonymous):
in x equation
OpenStudy (anonymous):
whats the anser ?
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