September 2018 1 13 Report

Rozwiąż układy równań

wszystko ma być w klamrach

a)x- 1=y-2

4x-3=-2(y -2)

b)2(x+y)-(x-1)=y+2

x+y=1

c)½(x-1)+y=-2½

x-7=1-y

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

2x+y=0


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