Odpowiedzi

2010-03-04T16:02:25+01:00
6(1/4x - 2) = 18
1/4x-2=108//*4
x-8=432
x=440

-2(2x - 1) = x/3
-4x+2=x/3 //*3
-12x+6=x
-13x=-6
x=6/13