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5x+7y=17
2x+y=5
2x=(5- y) 5x=17-7y
x=5-y sobre 2=17-7y
25-5 y=34-14y
4y=4 y=1 x=2
3x=6+ 6y=6 = 12 Espero ayudarte
2x+y=52x=(5- y) 5x=17-7y x=5-y sobre 2=17-7y25-5 y=34-14y4y=4 y=1 x=2 3x=6+ 6y=6 = 12