October 2018 1 12 Report

*pod klamerką, metoda podstawiania*

x = - y

2x - 3y = 10

x - 2 = 2y

x + 2y = -6

x= 1/2y

-3x + y = -3

WSZYSTKO POD KLAMERKĄ, PONIEWAŻ TO METODA PODSTAWIANIA!!!


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