January 2019 1 48 Report
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Sprawdź, czy para liczb  \left \{ {{x=4} \atop {y=-3}} \right. spełnia układ równań.
a) \left \{ {{3x+y=9} \atop {x-2y=10}} \right.
b) \left \{ {{2x+3y=-1} \atop {x-2y=8}} \right.
c) \left \{ {{1/2x+2y=-4} \atop {x+2/3y=2}} \right.
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