September 2018 1 15 Report

rozwiąż układy równań

a) \left \{ {{x=y} \atop {5x-y=4}} \right

b)\left \{ {{y=2x+1} \atop {4x+y=13}} \right

c)\left \{ {{5y-x=3} \atop {x=3-y}} \right


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