Помогите, пожалуйста :(
0.85 * 1/6 + 1/3 * 0.85 - 1/6 * 0.65 - 1/3 * 0.65 = 0.85 * (1/6+1/3) - 0.65 * (1/6+1/3) = (0.85-0.65) * (1/6+1/3) = 0.2 * (1/6+2/6) = 0.2 * 3/6 = 0.2 * 1/2 = 0.1