December 2018 1 8 Report
Rozwiąż
1.
(x-1) :6 + (x+2):3 = (x+3):4

2.
4-[2x-3(x-2)+5] >(większe lub równe) 1-[3-(2-5x)]

3.metoda podstawiania
2x-3y =7
8x+5y=11

4.metoda przeciwnych wspolczynnikow
-4x+7y=23
6x-5y=-29

5.obojetnie jaka metoda
(x-4)(x+2)+2y = x(x-3)-3
(y-1)(y+1)-3x = y(y+4)-12
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