October 2018 1 20 Report

Rozwiaz układy równan metoda przeciwnych współczynników:
1) 3x-4y+6=x-3y+7
4-x-y=2x-2y+1

2) 2(x-30+(y-5)=-4
x+2y=14

3) 5(x+3)-3(y+4)=-1
(2x+y)-(3x+2y)=8


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