October 2018 2 12 Report

Rozwiąż równanie i sprawdź wynik:

a) 2*(3a-4)-3*(2a+5)+2*(a-6)=0

b)7*(x-1)+2*(1-x)= 3*(1-2x)+x

c)2*(a+7-9)=3*(a-2)+8

d)5y-6+4y= 7-2y+9y

DAJE NAJ.......


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