Пошаговое объяснение:
1)0,25*4/7=
25 4 100 1
* --- = =
100 7 100*7 7
2) 7 75 525 21
--- * =
8 100 800 32
3) 375 4 1500 15 1
* --- = = = ---
1000 9 9000 90 6
Пошаговое объяснение:
1)0,25*4/7=
25 4 100 1
* --- = =
100 7 100*7 7
2) 7 75 525 21
--- * =
8 100 800 32
3) 375 4 1500 15 1
* --- = = = ---
1000 9 9000 90 6