September 2018 2 47 Report

Rozwiąż układy równań dowolną metodą:

\left \{ {{(x-2)^{2}+(y-x)(y+x)=y(y-1)} \atop {x+y-\frac{x-y}{2}=}\frac{x+2y}{2}} \right

\left \{ {{\frac{7x-3y}{5}=\frac{5x-y}{3}-\frac{x+y}{2}} \atop {3(x-1)=5(y+1)}} \right

\left \{{{\frac{9-5x}{2}=y+1} \atop {x=\frac{y}{3}-3}} \right


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