December 2018 1 19 Report
Usuń nawiasy i zredukuj wyrazy podobne:
A) -(x-2xy)-(xy-2x+4)+3xy-x
B) -3,2x+(-0,8y+2z)-(1,2y-0,8x)-(2z-2,4x)
C) -3a-[6a-4b-(5a-5b)
Pomóżcie!!!

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