September 2018 1 21 Report

Prosze o rozwiązanie tych zadan

a)\left \{ {{3x=12} \atop {x-y=1}} \right

b)\left \{ {{5y=2} \atop {x-y=2\frac{2}{5}}} \right

c)\left \{ {{4y-x=6} \atop {17y=0}} \right


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