Помогите пожалуйста решить пример.(3 1/3+5 1/6)*2/5-2 3/4:(1 1/2-2/5)

(3 1/3+5 1/6)*2/5-2 3/4:(1 1/2-2/5); 1)3 1/3+5 1/6=10/3+31/6=20/6+31/6=51/6;/// 2)51/6*2/5=51/15;/// 3)1 1/2-2/5=3/2-2/5=15/10-4/10=11/10; /// 4)2 3/4:11/10=11/4*10/11=5/2; ///; 5)51/6-5/2=51/6-15/6=36/6=6; Ответ: 6

(3 1/3 + 5 1/6) * 2/5 - 2 3/4 : (1/2 - 2/5) = (10/3 + 31/6) * 2/5 - 11/4 : (1/2 - 2/5) = (20+31)/6 * 2/5 - 11/4 : (5-4)/10 = 51/6 * 2/5 - 11/4 : 1/10 = 51/15 - 11/4 * 10/1 = 51/15 - 55/2 = (102-825)/30 = -723/30 = -24 3/30 = -24 1/10