Сколько будет 21 2/59 - 2/5 * (3 15/28 : 9/28 - 1 : 1 10/49) : 2 = только напишите все !

21 2/59-2/5*(3 15/28:9/28-1:1 10/49):2=19по действиям
3 15/28=99/2899/28:9/28=99/28* 28/9=11
1 10/49=59/491:59/49=1*49/59=49/59
11- 49/59=10 10/59=600/59
2/5:2=2/5* 1/2=1/5
1/5*600/59=120/59=2 2/59
21 2/59-2 2/59=19

1)3 15/28 : 9/28 = 73*28/9*28 = 73*1/9 = 73/9 = 8 1/9
2)1 : 1 10/49 = 1 : 59/49 = 49/59
3)8 1/9 - 49/59 = 4307-441/531 = 3866/531
4)2/5 * 3866/531 = 7732/2655
5)7732/2655 : 2 = 7732/2655 * 1/2 = 3866/2655
6)21 2/59 - 3866/2655 = 55845 - 3866/2655 = 51979/2655 = 881/45 = 19 26/45