October 2018 1 9 Report

Rozwiąż układy równań:
a)\[\begin{cases} -2x+y=6\\3x-2y=-9\\ \end{cases[/tex]}

b) \[\begin{cases} 2x+3y=18\\x+y=7\\ \end{cases[/tex]}

c) \[\begin{cases} 4x-3y=-26\\x+y=-3\\ \end{cases[/tex]}


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