-x-2+3(x-3)=3(4-x)-3
-x-2+3(x-3)=3(4-x)-3;
-х-2+3х-9=12-3х-3;
-х+3х+3х=12-3+2+9
5х=20
х=4
Ответ:4.
-x -2 +3x -9 = 12- 3x - 3 2x - 11 = 9 -3x 5x = 20 x= 4