Determine o conjunto solução do sistema: 2x-y=15
x+y=4
a) S= {(2,1)}
b) S= {(-3,1)}
c) S= {(1,-2)}
d) S= {(-3,-1)}
e) S= {(3,1)}
x+y=4
a) S= {(2,1)}
b) S= {(-3,1)}
c) S= {(1,-2)}
d) S= {(-3,-1)}
e) S= {(3,1)}
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