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Mathematics 19 Online
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

OpenStudy (anonymous):

Can you solve for x in the second equation?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

Add y to both sides. Then what do you get?

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