October 2018 1 10 Report

Oblicz układ równań metodą podstawiania..

\left \{ {{\frac{2x-y}{3}}+\frac{x+2y}{6}= -2\frac{1}{2} \atop {\frac{2x+y}{4}}-\frac{2x-y}{2}=1\frac{1}{2}\right.


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