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3x+2y=3
-x+5y=16 x(3)
multiplicamos
3x+2y=3
-3x+15y= 48
/ 17y = 51
y= 51/17
y=3
Ahora reemplazamos Y
3x+2(3)= 3
3x+6= 3
3x=3-6
3x=-3
x=.-1
CS { -1;3}