3 x + 9 = - 3 x + 9 - 27 + 1 = 2 x + 59 45 x - 19 = 19 x - 45 82 x - 9 = - 18 x + 1 nie rozumiem tego ..

3 x + 9 = - 3 x + 9 /+ 3x 6x +9 = 9 /-9 6x= 0 x=0 - 27 + 1 = 2 x + 59 -26= 2x +59 /-59 -85 = 2x x= -42,5 45 x - 19 = 19 x - 45/+19 45x= 19x -26 /-19x 26x = -26 / :26 x= -1 82 x - 9 = - 18 x + 1 /+9 82x =-18x +10 /+18x 100x= 10 /:100 x= 0,1

3 x + 9 = - 3 x + 9 9-9=--3x-3x x=0 - 27 + 1 = 2 x + 59 26-59=2x -33=2x/:-33 x=-16,5 45 x - 19 = 19 x - 45 45x-19x=-45+19 26x=-26/:26 x=-1 82 x - 9 = - 18 x + 1 82x+18x=1+9 100x=10/:100 x=0,1