January 2019 0 29 Report
Matematyka z plusem 2 gimnazjum zad 5 str 102 a),b),c),d).
a) 2x-3y=7
3x-5y=11
b) 5p-2r=21
3p+5r= -6
c) 2x-3y=1-
5x+5y=0
d) 5v_1 + 4v_2 = 4
7v_1 + 5v_2 = 6

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