September 2018 2 10 Report

rozwiaz uklady rownan metoda przeciwnych wspolczynnikow

a)2x-y=-13 d)2x+2y=4

4x-5y=5 3x+4y=7

b) 3x-2y=13

2x-3y=8

c)2x+y=3

x+3y=4


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