September 2018 1 20 Report

Rozwiąż układy równań:

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

x+y=1

b)½(x-1)+y=-2½

x-7=1-y

c) x-y/3- x+y/2=-½

x+y=3

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

2x+y=0

PROSZĘ O SZYBKIE ROZWIĄZANIE!


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