1) 4 4/5+13 5/12-5 5/6+9= 2) 19 2/3-6 1/36+5 3/8-4 3/12= 3) (12/25+Х)+13/50=2 17/50 помогите пожалуйста!!!!

Первый:1) 4 4/5 + 13 5/12 = 4 12*4/60 + 13 5*5/60 = 4 48/60 + 13 25/60 = 17 73/60 = 18 13/60;2) 18 13/60 - 5 5/6 = 18 13/60 - 5 10*5/60 = 18 13/60 - 5 50/50 = 17 73/60 - 5 50/60 = 12 23/60;3) 12 23/60 + 9 = 21 23/60.Ответ: 21 23/60.Второй: 1) 19 2/3 - 6 1/36 = 19 12*2/36 - 6 1/36 = 19 24/36 - 6 1/36 = 13 23/36;2) 13 23/36 + 5 3/8 = 13 2*23/72 + 5 9*3/72 = 13 46/2 + 5 27/72 = 18 73/72 = 19 1/72;3) 19 1/72 - 4 3/12 = 19 1/72 - 4 6*3/72 = 18 73/72 - 4 18/72 = 14 55/72.Ответ: 14 55/72.Третье:(12/25 + х) = 2 17/50 - 13/50;12/25 +х = 2 4/50;12/25 + х = 2 2/25;х = 2 2/25 - 12/25;х = 1 27/25 - 12/25;х = 1 15/25;х = 1 3/5.Ответ: х = 1 3/5.