Задание 4.5 помогите пожалуйста
1) 11x - 4x = 14 7x = 14 x = 2 2) 20x - 13x - 12x = 6 -5x = 6 x = -1.2 3) 9x + 4x = -26 13x = -26 x = -2 4) 11x + 7x - 24x = 42 -6x = 42 x = -7