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Mathematics 9 Online
OpenStudy (anonymous):

For the following system, if you isolated y in the first equation to use the Substitution Method, what expression would you substitute into the second equation? 2x + y = 8 -x - y = -5 Answer -8 - 2x 8 + 2x -8 + 2x 8 - 2x

hero (hero):

8 - 2x

OpenStudy (ash2326):

8-2x

OpenStudy (ash2326):

2x+y=8 y=8-2x substitute this in second to find x and then substitute x in above to find y

OpenStudy (anonymous):

8-2x

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