August 2018 1 21 Report
Rozwiąz układy równań metodą podstawiania.

a). 0,4x+0,3y=1,4
0,1x+3y=2,3
b). 1/2x-2y=8
2x+5y=6
c). 1/2x-3/4y=0
2/3x+1i1/4y=9
d). 3x+4y=1 i 2/4
6x+3y= 1 i 1/4

z gory dzieki
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