September 2018 1 26 Report

Rozwiaz układ równan ale nie metoda skróconą ;]

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

x-y= -2

b) 2x+3y=15

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

c) 4(x+2y)-3(x-y)=42

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


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