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OpenStudy (anonymous):
solve by the subtitution method 5x+7y=15 x=26-6y
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OpenStudy (angela210793):
5(26-6y)+7y=15 130-23y=15 -23y=-115 y=5 x=26-30=-4
OpenStudy (angela210793):
solution (-4;5)
OpenStudy (anonymous):
5x+7y=15 =>5(26-6y)+7y=15 =>130-30y+7y=15 =>23y=115 =>y=5 =>x=-4
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