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OpenStudy (anonymous):
solve by he elimination method 5r-7s=-7 7r+5s=79
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OpenStudy (anonymous):
r= (-7 + 7s) / 5 Plug that into 2nd equation. [(-49 +49s) /5] +5s =79 -49 + 74s = 395 Therefore s = 6
OpenStudy (anonymous):
plug s=6 into 1st now. 5r = 35 Therefore r = 7
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
rate me xD
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