АЛГЕБРА 8 КЛАСС ПОЖАЙЛУСТА!!!

5*(x-1) + 2 =< 6*(2+x) - 4
5x - 5 + 2 =< 12 + 6x - 4
5x - 6x =< 12 - 4 + 5 - 2
- x =< 11
x > = - 11

{ 5x - 6 >= 4
{ 3x - 1 =< 12
=>
{ 5x >= 10
{ 3x =< 13
=>
{ x >= 2
{ x =< 13/3
=>
2 =< x =< 13/3

(9x^2 - 4) / (2 + 3x) = 0
(3x + 2)(3x - 2) / (3x + 2) = 0
(3x - 2) = 0
x = 2/3