August 2018 2 24 Report
Rozwiaz uklady rownan metoda przeciwnych wspolczynnikow

a) x+y=9
x-y=3
b)3x+2y=2
-3x+y=10
c)3x+2y=5
2x+2y=2
d)x+4y=11
2x+5y=10
e) 4x+5y=-4
6x+7y=-6


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