September 2018 2 14 Report

Rozwiąż układy równań metodą podstawiania

a)-4(x+y-1)+3(y-x+2)=2

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

b)3(x-y+2)-(2x+y-1)=15

-(3x+2y-1)+2(x+y-3)=-3


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