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OpenStudy (anonymous):
7r-9s= -1 9r+7s=73 what is the solution of the system
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OpenStudy (anonymous):
r = 5 and s=4 http://www.wolframalpha.com/input/?i=7r-9s%3D+-1+and+9r%2B7s%3D73
OpenStudy (anonymous):
thats just what i have
OpenStudy (anonymous):
^well done
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