Вычислите 1 1/24 : 3 1/8 : 8/15*3 7/9 * 1 15/17

1)1 1/24  ÷  3 1/8 = 25/24  ÷  25/8 = 25/24  ×  8/25 =  1/3
2)1/3  ÷  8/15 = 1/3  ×  15/8 =15/24=  5/8
3)5/8  ×  3 7/9 = 5/8  ×  34/9 =170/72=  85/36 = 2 13/36
4)2 13/36  ×  1 15/17 = 85/36  ×  32/17 =2720/612=  40/9 = 4 4/9
ответ 4 4/9

1) 1 ( 1/24 ) : 3 ( 1/8 ) = ( 25/24 ) : ( 25/8 ) = 8/24 = 1/3 ; 2) ( 1/3 ) : ( 8/15 ) = 5/8 ; 3) ( 5/8 ) * 3 ( 7/9 ) = ( 5/8 ) * ( 34/9 ) = 170/72 = 85/36 ; 4) ( 85/36 ) * 1 ( 15/17 ) = ( 85/36 ) * ( 32/17 ) = 2720/612 = 1360/306 = 680/153 = 4 ( 68/153 )