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Mathematics 13 Online
OpenStudy (anonymous):

Is (8, -1) a solution of the system, 2x + 3y = 13 and x - y = 9? * Yes or No

OpenStudy (anonymous):

plug in your values of x and y and solve. if you the statement is true than it is a solution.

OpenStudy (radar):

this is an excellent suggestion. doing this results in: 2(8) + 3(-1) = 13 is it true?

OpenStudy (radar):

Note that it is not the only solution, but it may be one the solutions.

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