November 2018 1 18 Report

Rozwiąż układy równań metodą podstawiania.


a)

{ x-y=6

y= -1




b) {3x-2y =6

x=4



c)

{3x+y=10

y=2x


d)

{ -x-3y=5

y= -2x



e)

{4x-y=6

y=x




od Ania19981998
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