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OpenStudy (anonymous):
7x+8y=5 -9x-2y=-23 x=? y=?
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OpenStudy (anonymous):
Do you know substitution?
OpenStudy (anonymous):
Where you solve for x or y using one equation and plugging that into the other one.
OpenStudy (anonymous):
you can add them. first, you multiply 7x+8y=5 by 4 then you add both together 7x+8y= 5 -36x-8y=-92
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