Выполните действия: 1)1/3*(2 2/15*6 1/4-5 1/3*1 1/7)+4 5/9 2)30 4/5-1 2/5*(1 4/5*(12 7/12-9 19/36)-17/35*1 11/34)

1)1/3*(2 2/15*6 1/4-5 1/3*1 1/7)+4 5/9 = 11 50/63
           1) 2 2/15 * 6 1/4 = 32/15 * 25/4 = 8/3 * 5/1 = 40/3
           2) 5 1/3 * 1 1/7 = 16/3 * 8/7 = 128/21
           3) 40/3 - 128/21 = 280/21 - 128/21 = 152/21
           4) 1/3 * 152/21 = 152/63
           5) 152/21  +  4 5/9  =  152/21  +  41/9  =  456/63  +  287/63  =   743/63   = 11 50/63

2)30 4/5-1 2/5*(1 4/5*(12 7/12-9 19/36)-17/35*1 11/34) =  24
     1) 12 7/12 - 9 19/36 = 12 21/36 - 9 19/36 = 3 2/36 = 3 1/18
     2) 1 4/5 * 3 1/18 = 9/5 * 55/18 = 1/1 * 11/2 = 11/2
     3) 17/35 * 1 11/34 = 17/35 * 45/34 = 1/7 * 9/2 = 9/14
     4) 11/2 - 9/14 = 77/14 - 9/14 = 68/14 = 34/7
     5) 1 2/5 * 34/7 = 7/5 * 34/7 = 1/5 * 34/1 = 34/5
     6) 30 4/5 - 34/5 = 154/5 - 34/5 = 120/5 = 24