September 2018 3 18 Report
Zredukuj wyrazy podobne, a nastepnie oblicz wartosc liczbowa wyrazenia:
a) 5x-7+x+15-2x dla x=2
b)1/2y-3-2y+5 1/2+1/2 dla y=-1
c) -6x+2y+7+4x-5y-3 dla x=-0,5 y=0,1
d) 2x-6y-4y+8-5x+y-11 dla x= -1 1/3 y=1/9

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