January 2019 2 11 Report
Rozwiąż układ równań metodą podstawiania.
a) x-3y=7
2x+4y=24
b) -3x+y= -20
4x-y=26
c) 5-3x+2y=22
x-2y+15=0
d) 4x=3y+27
6x+y-13=0
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