September 2018 2 23 Report

Rozwiąż układy równań metodą podstawiania.

a) ½(x-1) + y = -2½

x - 7=1-y

b)x-y/3 - x+y/2 = -½

x+y=3

c)x(x-6)-x(y+x)=y(3-x)

2x+y=0


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