October 2018 1 37 Report

Proszę o pomoc w zadaniu(:

1.Usuń nawiasy i zredukuj wyrazy podobne.

a)-7(x-3y+1/7z-2)-3(y+x+z)-18y

b)2(1/2a+0,25b)-4(1,25a-3/4b)-a+b

c)-1/3(2,1x²-4 i 1/5y²)+y²+5x²+6(2/3y²-1 i 1/3x²)

/ - kreska ułamkowa

1 i 1/3 - jedna cała i jedna trzecia

Proszę!!!


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