September 2018 2 24 Report

Rozwiąż układy równań metodą podstawiania:

a) \left \{ {{2x-y=-1} \atop {3x+2y=9}} \right

b) \left \{ {{2y-x=8} \atop {4x+3y=1}} \right

c) \left \{ {{3x-8y=8} \atop {2x-y=1}} \right

d) \left \{ {{2x+3y=20} \atop {-x+3y=-1}} \right


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