X*12=72 72:X=12 72:2=х 25*X=150 150:Х=25 150:25=Х x*54=270 270:х=54 270:52-Х

Решим уравнения и найдем их корни.

1) X * 12 = 72;

х = 72/12;

х = 6;

2) 72 : X = 12;

12 * х = 72;

ч = 72/12;

х = 6; ж

3) 72 : 2 = х;

2 * х = 72;

х = 72/2;

х = 36;

4) 25 * X = 150;

x = 150/25;

x = 30/5;

x = 6;

5) 150 : Х = 25;

25 * x = 150;

x = 150/25;

x = 6;

7) 150 : 25 = x;

25 * x = 150;

x = 150/25;

x = 6;

8) x * 54 = 270;

x = 270/54;

x = 30/6;

x = 6;

9) 270 : х = 54;

54 * x = 270;

x = 6;

10) 270 : 52 = Х;

x = 135/26.