Помогите!!!!!!На уровне 6 класса!!!!!
2/3(1/3x - 0.5) = 4x + 2 1/2 2/3 * (1/3x - 5/10) = 4x + 2 1/2 20/30 * (10/30x - 15/30) = 4x + 2 1/2 20/30x -15 = 4x +2 1/2 2/3x - 4x = 17.5 -3 1/3x = 17.5 3 1/3x = -17.5 x = -17.5