32/8*6/3+5*8-17= 30/5*3/2/3*8= 40/5/2*3/2*4= 6*5+30/5*2-19=

Первый пример.

32 / 8 * 6 / 3 + 5 * 8 - 17 = 31;

32 / 8 = 4;

4 * 6 = 24;

24 / 3 = 8;

5 * 8 = 40;

40 + 8 = 48;

48 - 17 = 31.

Второй пример.

30 / 5 * 3 / 2 / 3 * 8 = 24;

30 / 5 = 6;

6 * 3 = 18;

18 / 2 = 9;

9 / 3 = 3;

3 * 8 = 24.

Третий пример. 

40 / 5 / 2 * 3 / 2 * 4 = 24;

40 / 5 = 8;

8 / 2 = 4;

4 * 3 = 12;

12 / 2 = 6;

6 * 4 = 24.

Четвертый пример.

6 * 5 + 30 / 5 * 2 - 19 = 23;

6 * 5 = 30;

30 / 5 = 6;

6 * 2 = 12;

30 + 12 = 42;

42 - 19 = 23.