г) верно
ж) (2x + 3) = (3x + 2)
x1 = 1; Проверка 2+3 = 3 + 2
-(2x + 3) = (3x + 2)
5x = 1; x2 = 1/5;
Проверка 2/5+3 ≠ 3/5+2; ∅
x = 1;
ж) 2x + x = 2(x+3)
x1 = 6; Проверка 12+6 = 2(6+3); 18 = 18;
2x + -x = 2(x+3)
x = -6; Проверка 12-6 = 2(-6+3); 6=6;
x = 6;-6;