x*5000/5=2000, (5000/5) * x=2000, x/2000=5000/5

x * 5000/5 = 2000;

х * 1000 = 2000;

х = 2000 : 1000;

х = 2;

2 * 5000/5 = 2000;

2 * 1000 = 2000;

2000 = 2000;

(5000/5) * x = 2000;

1000 * х = 2000;

х = 2000 : 1000;

х = 2;

(5000 / 5) * 2 = 2000;

1000 * 2 = 2000;

2000 = 2000;

x/2000 = 5000/5;

х = 1000 : 1/2000;

х = 1000 * 2000/1;

х = 2000000;

2000000/2000 = 5000/5;

1000 = 1000.